Origins of Hutu, Tutsi and Twa phenotype, genotype, cultural memory of inhabitants of Rwanda, archeology, and linguistics. Most Tutsis and Hutus carry the E1b1a paternal haplogroup, which is common among Bantu populations. More recent studies have de-emphasized physical appearance, such as height and nose width, in favor of examining blood factors, the presence of the sickle cell trait, lactose intolerance in adults, and other genotype expressions. Excoffier et al. (1987) found that the Tutsi and Hima, despite being surrounded by Bantu populations, are "closer genetically to Cushites and Ethiosemites". Another study concluded that, while the sickle cell trait among the Rwandan Hutu was comparable to that
Role of the international community in the Rwandan genocide should raid Hutu militants' weapons caches, whose location had been disclosed to him by a government informant. The UN failed to respond adequately to Dallaire's urgent requests. The role of the United States is directly inspired by their defeat that they underwent during their intervention in Somalia in 1993. For two months, from April to May 1994, the American government fought over the word "genocide" which is banned by the Convention for the Prevention and the Repression of Crime and Genocide (adopted by the General Assembly of the United Nations on 10 December 1948). In the US, President Bill Clinton