President Raul Castro says Cuba will not return to the Organization of American States after the regional group's secretary called for possible sanctions against Venezuela, AP reported. Castro spoke Saturday at a summit of Caribbean countries being held on the island. He extended "our most firm solidarity to our brothers the Venezuelan people, to the legitimate government of President Nicolas Maduro." The Cuban president called the OAS "an instrument of imperialist domination" that will never change and "because of that Cuba will never return." The U.S. pushed for Cuba's departure from the OAS in 1962. OAS Secretary General Luis Almargo has cited human rights concerns in asking the region's nations to apply the group's "Democratic Charter" against Venezuela, which could lead to diplomatic isolation and commercial sanctions. Venezuela has condemned the move.