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A religious war or holy war (Latin: bellum sacrum) is a war primarily caused or justified by differences in religion. In the modern period, debates are common over the extent to which religious, economic, or ethnic aspects of a conflict predominate in a given war. According to the Encyclopedia of Wars, out of all 1,763 known/recorded historical conflicts, 123, or 6.98%, had religion as their primary cause. Matthew White's The Great Big Book of Horrible Things gives religion as the cause of 13 of the world's 100 deadliest atrocities. In several conflicts including the Israeli–Palestinian conflict, the Syrian civil war, and the wars in Afghanistan and Iraq, religious elements are overtly present but variously described as fundamentalism or religious extremism—depending upon the observer's sympathies. However, studies on these cases often conclude that ethnic animosities drive much of the conflicts.
Some historians argue that what is termed "religious wars" is a largely "Western dichotomy" and a modern invention from the past few centuries, arguing that all wars that are classed as "religious" have secular (economic or political) ramifications. Similar opinions were expressed as early as the 1760s, during the Seven Years' War, widely recognized to be "religious" in motivation, noting that the warring factions were not necessarily split along confessional lines as much as along secular interests.
According to Jeffrey Burton Russell, numerous cases of supposed acts of religious wars such as the Thirty Years' War, the French Wars of Religion, the Sri Lankan Civil War, 9/11 and other terrorist attacks, the Bosnian War, and the Rwandan Civil War were all primarily motivated by social, political, and economic issues rather than religion. For example, in the Thirty Years' War the dominant participant on the "Protestant" side for much of the conflict was France, led by Cardinal Richelieu.
- 1 History of the concept of religion
- 2 Criteria for classification
- 3 The concept of "Holy War" in individual religious traditions
- 4 Religious conflict in the modern period
- 5 Timeline
- 6 References
- 7 Bibliography
- 8 External links
History of the concept of religion
The modern word religion comes from the Latin word religio. In the ancient and medieval world, the etymological Latin root religio was understood as an individual virtue of worship, never as doctrine, practice, or actual source of knowledge. The modern concept of "religion" as an abstraction which entails distinct sets of beliefs or doctrines is a recent invention in the English language since such usage began with texts from the 17th century due to the splitting of Christendom during the Protestant Reformation and more prevalent colonization or globalization in the age of exploration which involved contact with numerous foreign and indigenous cultures with non-European languages. It was in the 17th century that the concept of "religion" received its modern shape despite the fact that the Bible, the Quran, and other ancient sacred texts did not have a concept of religion in the original languages and neither did the people or the cultures in which these sacred texts were written. For example, the Greek word threskeia, which was used by Greek writers such as Herodotus and Josephus and is found in texts like the New Testament, is sometimes translated as "religion" today, however, the term was understood as "worship" well into the medieval period.
In the Quran, the Arabic word din is often translated as "religion" in modern translations, but up to the mid-1600s translators expressed din as "law". Even in the 1st century AD, Josephus had used the Greek term ioudaismos, which some translate as "Judaism" today, even though he used it as an ethnic term, not one linked to modern abstract concepts of religion as a set of beliefs. It was in the 19th century that the terms "Buddhism", "Hinduism", "Taoism", and "Confucianism" first emerged. Throughout its long history, Japan had no concept of "religion" since there was no corresponding Japanese word, nor anything close to its meaning, but when American warships appeared off the coast of Japan in 1853 and forced the Japanese government to sign treaties demanding, among other things, freedom of religion, the country had to contend with this Western idea.
According to the philologist Max Müller in the 19th century, the root of the English word "religion", the Latin religio, was originally used to mean only "reverence for God or the gods, careful pondering of divine things, piety" (which Cicero further derived to mean "diligence"). Max Müller characterized many other cultures around the world, including Egypt, Persia, and India, as having a similar power structure at this point in history. What is called ancient religion today, they would have only called "law".
Some languages have words that can be translated as "religion", but they may use them in a very different way, and some have no word for religion at all. For example, the Sanskrit word dharma, sometimes translated as "religion", also means law. Throughout classical South Asia, the study of law consisted of concepts such as penance through piety and ceremonial as well as practical traditions. Medieval Japan at first had a similar union between "imperial law" and universal or "Buddha law", but these later became independent sources of power.
There is no precise equivalent of "religion" in Hebrew, and Judaism does not distinguish clearly between religious, national, racial, or ethnic identities. One of its central concepts is "halakha", meaning the "walk" or "path" sometimes translated as "law", which guides religious practice and belief and many aspects of daily life.
Criteria for classification
The Crusades against Muslim expansion in the 11th century was recognized as a "holy war" or bellum sacrum by later writers in the 17th century. The early modern wars against the Ottoman Empire were seen as a seamless continuation of this conflict by contemporaries. The term "religious war" was used to describe, controversially at the time, what are now known as the European wars of religion, and especially the then-ongoing Seven Years' War, from at least the mid 18th century.
In their Encyclopedia of Wars, authors Charles Phillips and Alan Axelrod document 1763 notable wars in world history out of which 121 wars are in the "religious wars" category in the index. They note that before the 17th century, much of the "reasons" for conflicts were explained through the lens of religion and that after that time wars were explained through the lens of wars as a way to further sovereign interests. Some commentators have concluded that only 123 wars (7%) out of these 1763 wars were fundamentally originated by religious motivations.
The Encyclopedia of War, edited by Gordon Martel, using the criteria that the armed conflict must involve some overt religious action, concludes that 6% of the wars listed in their encyclopedia can be labelled religious wars.[page needed]
William T. Cavanaugh in his Myth of Religious Violence (2009) argues that what is termed "religious wars" is a largely "Western dichotomy" and a modern invention, arguing that all wars that are classed as "religious" have secular (economic or political) ramifications. Similar opinions were expressed as early as the 1760s, during the Seven Years' War, widely recognized to be "religious" in motivation, noting that the warring factions were not necessarily split along confessional lines as much as along secular interests.
It is evident that religion as one aspect of a people's cultural heritage may serve as a cultural marker or ideological rationalisation for a conflict that has deeper ethnic and cultural differences. This has been specifically argued for the case of The Troubles in Northern Ireland, often portrayed as a religious conflict of a Catholic vs. a Protestant faction, while the more fundamental cause of the conflict was in fact ethnic or nationalistic rather than religious in nature. Since the native Irish were mostly Catholic and the later British-sponsored immigrants were mainly Protestant, the terms become shorthand for the two cultures, but it is inaccurate to describe the conflict as a religious one.
According to Irfan Omar and Michael Duffey's review of violence and peacemaking in world religions, they note that studies of supposed cases of religious violence often conclude that violence is strongly driven by ethnic animosities.
The concept of "Holy War" in individual religious traditions
While early empires could be described as henotheistic, i.e. dominated by a single god of the ruling elite (as Marduk in the Babylonian empire, Assur in the Assyrian empire, etc.), or more directly by deifing the ruler in an imperial cult, the concept of "Holy War" enters a new phase with the development of monotheism.
Ancient warfare and polytheism
Classical Antiquity had a pantheon with particular attributes and interest areas. Ares personified war. While he received occasional sacrifice from armies going to war, there was only a very limited "cult of Ares". In Sparta, however, each company of youths sacrificed to Enyalios before engaging in ritual fighting at the Phoebaeum.
In early Christianity, St. Augustine's concept of just war (bellum iustum) was widely accepted, but warfare was not regarded as a virtuous activity and expressions of concern for the salvation of those who killed enemies in battle, regardless of the cause for which they fought, was common. According to historian Edward Peters, before the 11th century Christians had not developed a concept of "Holy War" (bellum sacrum), whereby fighting itself might be considered a penitential and spiritually meritorious act. During the 9th and 10th centuries, multiple invasions occurred which lead some regions to make their own armies to defend themselves and this slowly lead to the emergence of the Crusades, the concept of "holy war", and terminology such as "enemies of God" in the 11th century.
During the time of the Crusades, some of those who fought in the name of God were recognized as the Milites Christi, soldiers or knights of Christ. The Crusades were a series of military campaigns that took place during the 11th through 13th centuries against the Muslim Conquests. Originally, the goal was to recapture Jerusalem and the Holy Land from the Muslims, and support the besieged Christian Byzantine Empire against the Muslim Seljuq expansion into Asia Minor and Europe proper. Later, Crusades were launched against other targets, either for religious reasons, such as the Albigensian Crusade, the Northern Crusades, or because of political conflict, such as the Aragonese Crusade. In 1095, at the Council of Clermont, Pope Urban II raised the level of war from bellum iustum ("just war"), to bellum sacrum ("holy war"). In 16th-century France there was a succession of wars between Roman Catholics and Protestants (Hugenots primarily), known as the French Wars of Religion. In the first half of the 17th century, the German states, Scandinavia (Sweden, primarily) and Poland were beset by religious warfare in the Thirty Years War. Roman Catholicism and Protestantism figured in the opposing sides of this conflict, though Catholic France did take the side of the Protestants but purely for political reasons.
The Battle of Las Navas de Tolosa, known in Arab history as the Battle of Al-Uqab (معركة العقاب), took place on 16 July 1212 and was an important turning point in the Reconquista and in the medieval history of Spain. The forces of King Alfonso VIII of Castile were joined by the armies of his Christian rivals, Sancho VII of Navarre, Pedro II of Aragon and Afonso II of Portugal in battle against the Berber Muslim Almohad conquerors of the southern half of the Iberian Peninsula.
The Muslim conquests were a military expansion on an unprecedented scale, beginning in the lifetime of Muhammad and spanning the centuries, down to the Ottoman wars in Europe. Until the 13th century, the Muslim conquests were those of a more or less coherent empire, the Caliphate, but after the Mongol invasions, expansion continued on all fronts (other than Iberia which was lost in the Reconquista) for another half millennium until the final collapse of the Mughal Empire in the east and the Ottoman Empire in the west with the onset of the modern period.
There were also a number of periods of infighting among Muslims; these are known by the term Fitna and mostly concern the early period of Islam, from the 7th to 11th centuries, i.e. before the collapse of the Caliphate and the emergence of the various later Islamic empires.
While technically, the millennium of Muslim conquests could be classified as "religious war", the applicability of the term has been questioned. The reason is that the very notion of a "religious war" as opposed to a "secular war" is the result of the Western concept of the separation of Church and State. No such division has ever existed in the Islamic world, and consequently there cannot be a real division between wars that are "religious" from such that are "non-religious". Islam does not have any normative tradition of pacifism, and warfare has been integral part of Islamic history both for the defense and the spread of the faith since the time of Muhammad. This was formalised in the juristic definition of war in Islam, which continues to hold normative power in contemporary Islam, inextricably linking political and religious justification of war. This normative concept is known as Jihad, an Arabic word with the meaning "to strive; to struggle" (viz. "in the way of God"), which includes the aspect of struggle "by the sword".
The first forms of military Jihad occurred after the migration (hijra) of Muhammad and his small group of followers to Medina from Mecca and the conversion of several inhabitants of the city to Islam. The first revelation concerning the struggle against the Meccans was surah 22, verses 39-40:
To those against whom war is made, permission is given (to fight), because they are wronged;- and verily, Allah is most powerful for their aid. (They are) those who have been expelled from their homes in defiance of right,- (for no cause) except that they say, "our Lord is Allah". Did not Allah check one set of people by means of another, there would surely have been pulled down monasteries, churches, synagogues, and mosques, in which the name of Allah is commemorated in abundant measure. Allah will certainly aid those who aid his (cause);- for verily Allah is full of Strength, Exalted in Might, (able to enforce His Will).— Abdullah Yusuf Ali
This happened many times throughout history, beginning with Muhammad's battles against the polytheist Arabs including the Battle of Badr (624), and battles in Uhud (625), Khandaq (627), Mecca (630) and Hunayn (630).
In the Jewish religion, the expression Milkhemet Mitzvah (Hebrew: מלחמת מצווה, "commandment war") refers to a war that is obligatory for all Jews (men and women). Such wars were limited to territory within the borders of the land of Israel. The geographical limits of Israel and conflicts with surrounding nations are detailed in the Tanakh, the Hebrew Bible, especially in Numbers 34:1-15 and Ezekiel 47:13-20. The concept of a religious war was absent in Jewish thought for approximately 2000 years, though it reemerged in some factions of the Zionist movement, particularly Revisionist Zionism. "From the earliest days of Israel's existence as a people, holy war was a sacred institution, undertaken as a cultic act of a religious community.
According to Reuven Firestone, ""Holy War" is a Western concept referring to war that is fought for religion, against adherents of other religions, often in order to promote religion through conversion, and with no specific geographic limitation. This concept does not occur in the Hebrew Bible, whose wars are not fought for religion or in order to promote it but, rather, in order to preserve religion and a religiously unique people in relation to a specific and limited geography."
Religious conflict in the modern period
The Israeli–Palestinian conflict can be viewed primarily as an ethnic conflict between two parties where one party is most often portrayed as a singular ethno-religious group consisting only of the Jewish majority and ignores non-Jewish minority Israeli citizens who at varying levels support a Zionist state, especially the Druze and Circassians who for example volunteer in higher numbers for IDF combat service and are represented in the Israeli parliament in greater percentages than Israeli Jews are as well as Israeli Arabs, Samaritans, various other Christians, and Negev Bedouin; the other party is sometimes presented as an ethnic group which is multi-religious (although most numerously consisting of Muslims, then Christians, then other religious groups up to and including Samaritans and even Jews). Yet despite the multi-religious composition of both of the parties in the conflict, elements on both sides often view it as a religious war between Jews and Muslims. In 1929, religious tensions between Muslim and Jewish Palestinians over Jews praying at the Wailing Wall led to the 1929 Palestine riots including the Hebron and Safed ethnic cleansings of Jews.
In 1947, the UN decided on partitioning the Mandate of Palestine, led to the creation of the state of Israel and Jordan annexing the West Bank portion of the mandate, since then the region has been plagued with conflict. The 1948 Palestinian exodus also known as the Nakba (Arabic: النكبة), occurred when approximately 711,000 to 726,000 Palestinian Arabs fled or were expelled from their homes, during the 1948 Arab–Israeli War and the Civil War that preceded it. The exact number of refugees is a matter of dispute, though the number of Palestine refugees and their unsettled descendants registered with UNRWA is more than 4.3 million. The causes remain the subject of fundamental disagreement between Palestinians and Israelis. Jews make a religious and historical claim to the land, and Palestinians make historic, religious and ethnic claims to the land.
Pakistan and India
The All India Muslim League (AIML) was formed in Dhaka in 1906 by Muslims who were suspicious of the Hindu-majority Indian National Congress. They complained that Muslim members did not have the same rights as Hindu members. A number of different scenarios were proposed at various times.This was fuelled by the British policy of "Divide and Rule", which they tried to bring upon every political situation. Among the first to make the demand for a separate state was the writer/philosopher Allama Iqbal, who, in his presidential address to the 1930 convention of the Muslim League said that a separate nation for Muslims was essential in an otherwise Hindu-dominated subcontinent.
After the dissolution of the British Raj in 1947, two new sovereign nations were formed—the Union of India and the Dominion of Pakistan. The subsequent partition of the former British India displaced up to 12.5 million people, with estimates of loss of life varying from several hundred thousand to a million. India emerged as a secular nation with a Hindu majority, while Pakistan was established as an Islamic republic with Muslim majority population.
Abyssinia – Somalia
The Abyssinian–Adal war was a military conflict between the Abyssinians and the Adal Sultanate from 1529 until 1559. The Imam Ahmad ibn Ibrahim al-Ghazi (nicknamed Gurey in Somali and Gragn in Amharic (ግራኝ Graññ), both meaning "the left-handed") came close to extinguishing the ancient realm of Abyssinia, and forcibly converting all of its surviving subjects to Islam; the intervention of the European Cristóvão da Gama, son of the famous navigator Vasco da Gama, attempted to help to prevent this outcome but was killed by al-Ghazi. However, both polities exhausted their resources and manpower in this conflict, allowing the northward migration of the Oromo into their present homelands to the north and west of Addis Ababa. Many historians trace the origins of hostility between Somalia and Ethiopia to this war. Some historians also argue that this conflict proved, through their use on both sides, the value of firearms such as the matchlock musket, cannons, and the arquebus over traditional weapons.
Inter-ethnic conflict in Nigeria has generally had a religious element. Riots against Igbo in 1953 and in the 1960s in the north were said to have been sparked by religious conflict. The riots against Igbo in the north in 1966 were said to have been inspired by radio reports of mistreatment of Muslims in the south. A military coup d'état led by lower and middle-ranking officers, some of them Igbo, overthrew the NPC-NCNC dominated government. Prime Minister Balewa along with other northern and western government officials were assassinated during the coup. The coup was considered an Igbo plot to overthrow the northern dominated government. A counter-coup was launched by mostly northern troops. Between June and July there was a mass exodus of Ibo from the north and west. Over 1.3 million Ibo fled the neighboring regions in order to escape persecution as anti-Ibo riots increased. The aftermath of the anti-Ibo riots led many to believe that security could only be gained by separating from the North.
The 2010 Jos riots saw clashes between Muslim herders against Christian farmers near the volatile city of Jos, resulting in hundreds of casualties. Officials estimated that 500 people were massacred in night-time raids by rampaging Muslim gangs.
During the rule of the Catholic Ngo Dinh Diem in South Vietnam, the discrimination against the majority Buddhist population generated the growth of Buddhist institutions as they sought to participate in national politics and gain better treatment. The Buddhist Uprising of 1966 was a period of civil and military unrest in South Vietnam, largely focused in the I Corps area in the north of the country in central Vietnam.
In a country where the Buddhist majority was estimated to be between 70 and 90 percent, Diem ruled with a strong religious bias. As a member of the Catholic Vietnamese minority, he pursued pro-Catholic policies that antagonized many Buddhists.
The Dungan revolt (1862–1877) and Panthay Rebellion (1856–1873) by the Hui were also set off by racial antagonism and class warfare, rather than the mistaken assumption that it was all due to Islam that the rebellions broke out. During the Dungan revolt fighting broke out between Uyghurs and Hui.
In 1936, after Sheng Shicai expelled 20,000 Kazakhs from Xinjiang to Qinghai, the Hui led by General Ma Bufang massacred their fellow Muslims, the Kazakhs, until there were only 135 of them left.
Tensions with Uyghurs and Hui arose because Qing and Republican Chinese authorities used Hui troops and officials to dominate the Uyghurs and crush Uyghur revolts. Xinjiang's Hui population increased by over 520 percent between 1940 and 1982, an average annual growth rate of 4.4 percent, while the Uyghur population only grew by 1.7 percent. This dramatic increase in the Hui population led inevitably to significant tensions between the Hui and Uyghur Muslim populations. Some old Uyghurs in Kashgar remember that the Hui army at the Battle of Kashgar (1934) massacred 2,000 to 8,000 Uyghurs, which caused tension as more Hui moved into Kashgar from other parts of China. Some Hui criticize Uyghur separatism, and generally do not want to get involved in conflicts in other countries over Islam for fear of being perceived as radical. Hui and Uyghur live apart from each other, praying separately and attending different mosques.
Lebanese Civil War
There is no consensus among scholars on what triggered the Lebanese Civil War. However, the militarization of the Palestinian refugee population, with the arrival of the PLO guerrilla forces did spark an arms race amongst the different Lebanese political factions. However the conflict played out along three religious lines, Sunni Muslim, Christian Lebanese and Shiite Muslim, Druze are considered among Shiite Muslims.
It has been argued that the antecedents of the war can be traced back to the conflicts and political compromises reached after the end of Lebanon's administration by the Ottoman Empire. The Cold War had a powerful disintegrative effect on Lebanon, which was closely linked to the polarization that preceded the 1958 political crisis. During the 1948 Arab–Israeli War an exodus of Palestinian refugees who fled the fighting or were expelled from their homes, arrived in Lebanon. Palestinians came to play a very important role in future Lebanese civil conflicts, whilst the establishment of Israel radically changed the local environment in which Lebanon found itself.
Lebanon was promised independence and on 22 November 1943 it was achieved. Free French troops, who had invaded Lebanon in 1941 to rid Beirut of the Vichy French forces, left the country in 1946. The Christians assumed power over the country and economy. A confessional parliament was created, where Muslims and Christians were given quotas of seats in parliament. As well, the President was to be a Christian, the Prime Minister a Sunni Muslim and the Speaker of Parliament a Shia Muslim.
In March 1991, parliament passed an amnesty law that pardoned all political crimes prior to its enactment. The amnesty was not extended to crimes perpetrated against foreign diplomats or certain crimes referred by the cabinet to the Higher Judicial Council. In May 1991, the militias (with the important exception of Hezbollah) were dissolved, and the Lebanese Armed Forces began to slowly rebuild themselves as Lebanon's only major non-sectarian institution.
Some violence still occurred. In late December 1991 a car bomb (estimated to carry 220 pounds of TNT) exploded in the Muslim neighborhood of Basta. At least thirty people were killed, and 120 wounded, including former Prime Minister Shafik Wazzan, who was riding in a bulletproof car.
The Croatian War (1991–95) and Bosnian War (1992–95), have been viewed of as religious wars between the Orthodox, Catholic and Muslim populations of former Yugoslavia, that is, Serbs, Croats and Bosniaks. Traditional religious symbols were used during the wars. Notably, foreign Muslim volunteers came to Bosnia to wage jihad ("jihad" doesn’t mean "holy war", it means "struggle"), and were thus known as "Bosnian mujahideen".
Sudanese Civil War
The Second Sudanese Civil War from 1983 to 2005 have describe the conflict as an ethnoreligious one where the Muslim central government's pursuits to impose sharia law on non-Muslim southerners led to violence, and eventually to the civil war. The war resulted in the independence of South Sudan six years after the war ended. Sudan is Muslim and South Sudan is Christian.
Timeline of religious wars in Europe from 600 BCE to present. Colours give an indication of which religious factions were belligerent during these armed conflicts.
- Christians versus pagans
- Christians versus 'heretics'
- Christians versus Muslims
- Catholics versus Orthodox
- Catholics versus Protestants
- pogrom Anti-Jewish
- Christians versus secularists
- Axelrod, Alan; Phillips, Charles, eds. (2004). Encyclopedia of Wars (Vol.3). Facts on File. pp. 1484-1485 Index entry for "Religious wars" category. ISBN 0816028516.
- Matthew White (2011). The Great Big Book of Horrible Things. W.W. Norton & Company. ISBN 978-0-393-08192-3.
- Omar, Irfan; Duffey, Michael (eds.). "Introduction". Peacemaking and the Challenge of Violence in World Religions. Wiley-Blackwell. p. 1. ISBN 9781118953426.
This book does not ignore violence committed in the name of religion. Analyses of case studies of seeming religious violence often conclude that violence is strongly driven by ethnic animosities.
- Cavanaugh, William T. (2009). The Myth of Religious Violence : Secular Ideology and the Roots of Modern Conflict. Oxford: Oxford University Press. ISBN 978-0-19-538504-5.
- John Entick, The General History of the Later War, Volume 3, 1763, p. 110.
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- Max Müller, Natural Religion, p. 33 (1889)
- Lewis & Short, A Latin Dictionary
- Max Müller. Introduction to the science of religion. p. 28.
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- Hershel Edelheit, Abraham J. Edelheit, History of Zionism: A Handbook and Dictionary, p. 3, citing Solomon Zeitlin, The Jews. Race, Nation, or Religion? ( Philadelphia: Dropsie College Press, 1936).
- Whiteford, Linda M.; Trotter II, Robert T. (2008). Ethics for Anthropological Research and Practice. Waveland Press. p. 22. ISBN 978-1-4786-1059-5.
- E.g. Bellum sacrum Ecclesiae militantis contra Turcum by Léonard de Vaux (1685).
- Israel Mauduit, Considerations on the Present German War, 1759, p. 25. John Entick, The General History of the Later War, Volume 3, 1763, p. 110.
- Axelrod, Alan & Phillips, Charles Encyclopedia of Wars Vol.1 , Facts on File, November 2004, ISBN 978-0-8160-2851-1. p.xxii. "Wars have always arisen, and arise today, from territorial disputes, military rivalries, conflicts of ethnicity, and strivings for commercial and economic advantage, and they have always depended on, and depend on today, pride, prejudice, coercion, envy, cupidity, competitiveness, and a sense of injustice. But for much of the world before the 17th century, these “reasons” for war were explained and justified, at least for the participants, by religion. Then, around the middle of the 17th century, Europeans began to conceive of war as a legitimate means of furthering the interests of individual sovereigns."
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- "The Encyclopedia of War" by Gordon Martel (17 Jan 2012, 2912 pages)
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- Burkert, Greek Religion, p. 170.
- "Here each company of youths sacrifices a puppy to Enyalius, holding that the most valiant of tame animals is an acceptable victim to the most valiant of the gods. I know of no other Greeks who are accustomed to sacrifice puppies except the people of Colophon; these too sacrifice a puppy, a black bitch, to the Wayside Goddess." Pausanias, 3.14.9.
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- Lynn Hunt describes the battle as a "major turning point in the reconquista..." See Lynn Hunt, R. Po-chia Hsia, Thomas R. Martin, Barbara H. Rosenwein, and Bonnie Smith, The Making of the West: Peoples and Cultures: A Concise History: Volume I: To 1740, Second Edition (New York: Bedford/St. Martin's 2007), 391.
- Guggenberger, Anthony, A General History of the Christian Era: The Papacy and the Empire, Vol.1, (B. Herder, 1913), 372.
- James Turner Johnson, The Holy War Idea in Western and Islamic Traditions, Pennsylvania State University Press, 1997, ISBN 9780271042145, chapter 1, esp. pp. 20–25.
- Khadduri, Majid (1955). War and Peace in the Law of Islam. Johns Hopkins Press. pp. 55–56.
- William M. Watt: Muhammad at Medina, p.4; q.v. the Tafsir regarding these verses
- Holy War in Judaism: The Fall and Rise of a Controversial Idea
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- Metcalf & Metcalf 2006, pp. 221–222
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The factors that provoked the military coup, primarily the closely intertwined issues of Islamic law and of the civil war in the south, remained unresolved in 1991. The September 1983 implementation of the sharia throughout the country had been controversial and provoked widespread resistance in the predominantly non-Muslim south ... Opposition to the sharia, especially to the application of hudud (sing., hadd), or Islamic penalties, such as the public amputation of hands for theft, was not confined to the south and had been a principal factor leading to the popular uprising of April 1985 that overthrew the government of Jaafar an Nimeiri
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The war flared again in 1983 after then-President Jaafar Nimeri abrogated the peace accord and announced he would turn Sudan into a Muslim Arab state, where Islamic law, or sharia, would prevail, including in the southern provinces. Sharia can include amputation of limbs for theft, public flogging and stoning. The war, fought between the government and several rebel groups, continued for two decades.
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