Mission for Rwanda is regarded as a major failure. The international response to the Rwandan genocide was poor. For weeks, the major power nations denied that a genocide was taking place in Rwanda. The United States refused to call the incident genocide because using the term would make an obligation for the United States to send troops, which it was reluctant to do after several of its soldiers were killed during a humanitarian mission in Somalia the previous year. Finally in July 1994, after the genocide was over, the UN Security Council called for an investigation of the events, and acted to establish an international criminal tribunal to prosecute those individuals most responsible for the genocide. Adopting Resolution 955, the Security Council created the ICTR on 8 November 1994 and the ICTR would also deal with other crimes against international humanitarian law committed on the territory of Rwanda and neighboring states between 1 January 1994 and 31 December 1994. ICTR structure The tribunal consisted of 16 judges in four "chambers" – three to hear trials, and one to hear appeals. In addition, there were 9 ad litem judges, making 25 in all. All 9 ad litem judges were assigned to Chambers II and III. There was an additional pool of 9 further ad literim judges who would be called on in the case of a judge being absent. The column denoted by # indicates the order of precedence. Trial Chamber I Trial Chamber II Trial Chamber III Appeals Chamber Office of the Prosecutor The Office of the Prosecutor was divided into various units at the height of its activity, including the Investigations Division and the Prosecution Division: The Prosecution Division was responsible for prosecuting all cases before the Tribunal. Headed by a Chief of Prosecutions. The Investigations Division was responsible for collecting evidence implicating individuals in crimes committed in Rwanda in 1994. Headed by a Chief of Investigations. Prosecutors Richard Goldstone, late 1994 to 30 September 1996 (by virtue of Resolution 936) Louise Arbour, 1 October 1996 to 15 September 1999 (Resolution 1047) Carla Del Ponte, 15 September 1999 to 14 September 2003 (Resolution 1259) Hassan Bubacar Jallow, 15 September 2003 to 31 December 2015 (Resolution 1505) The Registry The Registry was responsible for the overall administration and management of the ICTR. It also performed other legal functions assigned to it by the Tribunal’s Rules of Procedure and Evidence, and