After the 1969 coup, representatives of the Four Powers – France, the United Kingdom, the United States and the Soviet Union – were called to meet RCC representatives. The U.K. and U.S. quickly extended diplomatic recognition, hoping to secure the position of their military bases in Libya and fearing further instability. Hoping to ingratiate themselves with Gaddafi, in 1970 the U.S. informed him of at least one planned counter-coup. Such attempts to form a working relationship with the RCC failed; Gaddafi was determined to reassert national sovereignty and expunge what he described as foreign colonial and imperialist influences. His administration insisted that the U.S. and U.K. remove their military bases from Libya, with Gaddafi proclaiming that "the armed forces which rose to express the people's revolution [will not] tolerate living in their shacks while the bases of imperialism exist in Libyan territory." The British left in March and the Americans in June 1970.