In 1942, the British Empire won a great military victory Al-Alamayn, the end of the beginning on Egyptian soil. Yet five years later, in an ugly, forgotten debate at the Security Council, the United States led Britain and Egypt to an inconclusive draw. How did this Imperial weakening come about? The roots lie in the interaction of British policy, Egyptian politics, and the post-war international order. Imperial control had rested upon the practice of intervention using the rivalry between the Palace and the majority political party, the Wafd. In 1942, and again in 1943 and 1944, British Ambassador Miles Lampson forced Faruq, the King of Egypt, to put, and keep, Prime Minister Mustaffa Nahhas in power. But this came at the cost of national aspirations al-Gala (evacuation of all British forces) and sovereignty over Sudan being raised as the rallying cries of a frustrated political opposition. Meanwhile, American (and Soviet) influence grew; and Egypts new diplomatic instrument, the Arab League, became part of the political game. Nahhas was dismissed in September 1944. His successor, Ahmad Mahir, who had been on the Embassys payroll, was assassinated in 1945. Lampson thus lost control of the game. In London, Foreign Secretary Ernest Bevin recognized the need for a new ambassador and a conciliatory negotiator (Lord Stansgate), offering full evacuation to Prime Minister Ismail Sidqi. And yet this compromise also broke down as a result of the unresolved Sudan question. Intervention was weighed in London, but rejected. The Egyptians insisted on the 1947 UN debate, which merely produced a prolonged stalemate indicating Britains Imperial decline. This set the stage for the Suez debacle of the 1950s, calling an end to Britains authority at multiple levels.