دولة جزرية
Cox became the Chairman of the Vancouver Fair Play for Cuba Committee in 1962 along with Phil Courneyeur who was elected Secretary. Cox was criticized for accepting a trip to Cuba in January 1963, shortly after the Cuban Missile Crisis, paid for by Fidel Castro's government. Upon his return from Cuba Cox addressed a joint meeting of the Burnaby Constituency CCF-NDP and the Oil, Atomic and Chemical Workers Union where he answered critics of his trip and affirmed he would return to the Caribbean Island country if invited. The speech is available in print at http://www.socialisthistory.ca/Docs/1961-/Cuba/FourCanadians.htm With Dick Fidler, John Glenn and Charles Biesick, he contributed to "Four Canadians Who Saw Cuba", which was published by the Fair Play for Cuba Committee in 1963.