"formal alliance with the Soviet Union" . "relations with the Soviet Union" . . "Cuba-Soviet alliance" . . . "Cuban\u2013Soviet relationship" . . "relationship between Cuba" . "Cuban ambassador to the Soviet Union" . "Cuba's close alliance" . "relations with the USSR" . "became closely allied with the USSR" . "aligned with the Soviet Union" . . "Soviet military personnel" . "ally" . "relationship with the Soviet Union" . "Soviet assistance to Cuba" . "Cuba\u2013Soviet_Union_relations#List_of_Soviet_ambassadors_in_Cuba" . "Soviet-Cuban" . . "Cuba\u2013Soviet Union relations" . "Cuba\u2013Soviet Union relations" . . "special Soviet relationship" . . "Cuba" . . "provide further support" . . "relationship" . "relations" . "ties with the Soviet Union" . "military and economic aid" .