Assassination of Juvénal Habyarimana and Cyprien Ntaryamira form a coalition government, ratification of the Arusha Accords was impossible. The most extreme of the Hutu parties, the CDR, which openly called for ethnic cleansing of the Tutsi, was entirely unrepresented in the Accords. The security situation deteriorated throughout 1993. Armed Hutu militias attacked Tutsis throughout the country, while high-ranking adherents of Hutu Power began to consider how the security forces might be turned to genocide. In February 1994, Roméo Dallaire, the head of the military force attached to the United Nations Assistance Mission for Rwanda (UNAMIR), which had been sent to observe the implementation of the Arusha Accords,
Origins of Hutu, Tutsi and Twa the importance of the pastoralist migrations. Still other studies point out that cultural transmission can occur without actual human migration. This raises the question of how much of the changes around the fifteenth and sixteenth centuries was the result of an influx of people as opposed to the existing population being exposed to new ideas. Studies that approach the subject of racial purity are among the most controversial. These studies point out that the pastoralist migrants and pre-migration Rwandans lived side by side for centuries and practiced extensive intermarriage. The notion that current Rwandans can claim exclusively Tutsi or Hutu