Relations between Cuba and Venezuela were established in 1902. The relationship deteriorated in the 1960s and Venezuela broke relations in late 1961 following the Betancourt Doctrine policy of not having ties with governments that had come to power by non-electoral means. A destabilizing factor was the Cuban support for the antigovernment guerrilla force that operates in remote rural areas. Venezuela broke off relations with Cuba after the Machurucuto invasion in 1967, when Cuban trained guerrillas landed in Venezuela seeking to recruit guerrillas and overthrow the government of Raúl Leoni. Relations were reestablished in 1974.