In the 1970s, Cuba expanded military aid programs to Africa in the Middle East, sending military missions to Sierra Leone in 1972, South Yemen in 1973, Equatorial Guinea in 1973, and Somalia in 1974. It sent combat troops to Syria in 1973 to fight against Israel. Cuba was following the general Soviet policy of détente with the West, and secret discussions were opened with the United States about peaceful coexistence. They ended abruptly when Cuba sent combat troops to fight in Angola.