History of Sudan association with the single largest political grouping, the [[National Umma Party Sudan|Umma Party]] (once led by a descendant of the Mahdi, [[Sadiq al Mahdi]]). Taking advantage of conditions resulting from Ottoman-Egyptian exploitation and maladministration, the Mahdi led a nationalist revolt culminating in the fall of [[Khartoum]] on 26 January 1885. The interim governor-general of the Sudan, the British Major-General [[Charles George Gordon]], and many of the fifty thousand inhabitants of Khartoum were massacred. The Mahdi died in June 1885. He was followed by [[Abdallahi ibn Muhammad]], known as the [[Caliph|Khalifa]], who began an expansion of Sudan's area into Ethiopia. Following
Khartoum Resolution eventually opened through the auspices of the Jarring Mission (1967–1973), and secret direct talks also took place between Israel and Jordan, but neither avenue succeeded in achieving a meaningful settlement, setting the stage for a new round of conflict. Khartoum Resolution The Khartoum Resolution of 1 September 1967 was issued at the conclusion of the 1967 Arab League summit convened in the wake of the Six-Day War, in Khartoum, the capital of Sudan. The summit lasted from 29 August to 1 September and was attended by eight Arab heads of state: Egypt, Syria, Jordan, Lebanon, Iraq, Algeria, Kuwait, and Sudan.