Vietnam relented in 1978, seeking economic aid to fund the Second Five-Year Plan. In 1978 Lê Duẩn and Phạm Văn Đồng signed a 25-year Treaty of Friendship and Mutual Cooperation with the USSR. Under Soviet protection, Vietnam invaded Kampuchea. In reaction China invaded Vietnam. Vietnam leased several bases to the Soviet Union to protect its territory from China. It was rumored that one of China's demands for peace was the ending of Soviet assistance to Vietnam. In Asia Vietnam played a role similar to Cuba's in Latin America: it supported local revolutionary groups and was a headquarters for Soviet-style communism. Vietnam supported the Soviet invasion of Afghanistan and received $3 million a day in military aid.