unfolding genocide. Probes by the UN have found evidence of increasing incitement of hatred and religious intolerance by "ultra-nationalist Buddhists" against Rohingyas while the Myanmar security forces have been conducting "summary executions, enforced disappearances, arbitrary arrests and detentions, torture and ill-treatment, and forced labour" against the community. Before the 2015 Rohingya refugee crisis and the military crackdown in 2016 and 2017, the Rohingya population in Myanmar was close to 1.4 million, chiefly in the northern Rakhine townships, which were 80–98% Rohingya. Since 2015, over 900,000 Rohingya refugees have fled to south-eastern Bangladesh alone, and more to other surrounding countries, and major Muslim nations. More than 100,000 Rohingyas in Myanmar are confined in camps for internally displaced persons. Shortly before a Rohingya rebel attack that killed 12 security forces on 25 August 2017, the Myanmar military launched "clearance operations" against the Rohingya Muslims in Rakhine state that, according to NGOs, the Bangladeshi government and international news media, left many dead, and many more injured, tortured or raped, with villages burned. The government of Myanmar has denied the allegations. Nomenclature The modern term Rohingya emerged from colonial and pre-colonial terms Rooinga and Rwangya. The Rohingya refer to themselves as Ruáingga . In Burmese they are known as rui hang gya (following the MLC Transcription System) ( ) while in Bengali they are called Rohingga ( ). The term "Rohingya" may come from Rakhanga or Roshanga, the words for the state of Arakan. The word Rohingya would then mean "inhabitant of Rohang", which was the early Muslim name for Arakan. The usage of the term Rohingya has been historically documented prior to the British Raj. In 1799, Francis Buchanan wrote an article called "A Comparative Vocabulary of Some of the Languages Spoken in the Burma Empire", which was found and republished by Michael Charney in the SOAS Bulletin of Burma Research in 2003. Among the native groups of Arakan, he wrote are the: "Mohammedans, who have long settled in Arakan, and who call themselves Rooinga, or natives of Arakan." The Classical Journal of 1811 identified "Rooinga" as one of the languages spoken in the "Burmah Empire". In 1815, Johann Severin Vater listed "Ruinga" as an ethnic group with a distinct language in a compendium of languages published in German. In 1936, when Burma was still under British rule, the "Rohingya Jam’iyyat al Ulama" was founded in Arakan. According to Jacques Leider, the Rohingya