TIMELINE - Conflict in Sudan's Darfur

(Reuters) - Sudan cut diplomatic relations with Chad on Sunday after an attack on the Sudanese capital by Darfur rebels which it said was supported by Chadian President Idriss Deby.

Below is a chronology of some major events in the conflict in western Sudan:

February 2003 - Two rebel groups rise up, saying government neglects arid region and arms Arab militia against civilians.

April 8, 2004 - Government, Sudan Liberation Army (SLA) and Justice and Equality Movement (JEM) rebels agree ceasefire, later agreeing it should be monitored by foreign forces.

May 5, 2006 - Sudan's government and SLA sign new peace deal. Rival SLA faction and the smaller JEM reject the deal.

August 31 - U.N. Security Council votes to create a U.N. peacekeeping force of 26,000 U.N. troops and police in Darfur, but Sudan rejects the idea of foreign troops.

January 10, 2007 - Sudan and Darfur rebels agree to a 60-day ceasefire and a peace summit sponsored by the African Union and United Nations.

Feb 27 - International Criminal Court's chief prosecutor names first two war crimes suspects in Darfur. Sudan says the ICC has no jurisdiction and later rejects arrest warrants.

May 29 - U.S. President George W. Bush imposes new U.S. sanctions on Sudan and asks for support for an international arms embargo to end what he calls genocide in Darfur.