A series of meetings, begun in 1969, ended abruptly in 1972 when tensions flared over a possible Guatemalan invasion. Talks resumed in 1973, but broke off again in 1975 when tensions flared once more. Between 1975 and 1981, the Belizean and British governments, frustrated at dealing with the military-dominated regimes in Guatemala, began to state their case for self-determination at international forums such as a meeting of the heads of Commonwealth of Nations governments in Jamaica, the conference of ministers of the Nonaligned Movement in Peru, and at meetings of the United Nations (UN).