Kammala jumla mai zuwa: Ko da yake yana ƙyamar mulkin soja na dama na Argentina, Castro ya goyi bayan su a cikin 1982 Falklands War da United Kingdom kuma ya ba da taimakon soja ga 'yan Argentina. Castro ya goyi bayan kungiyar New Jewel Movement da ta kwace mulki a Grenada a shekarar 1979, ta aika da likitoci, malamai, da masu fasaha don taimakawa ci gaban kasar, kuma ta yi abokantaka da Shugaban Grenadine Maurice Bishop. Lokacin da aka kashe Bishop a cikin juyin mulkin da Soviet ta goyi bayan mai tsattsauran ra'ayi na Marxist Bernard Coard a watan Oktoba na 1983, Castro ya ci gaba da goyon bayan gwamnatin Grenada. Duk da haka, Amurka ta yi amfani da juyin mulki a matsayin tushen
mamaye tsibirin. Ma'aikatan gine-ginen Cuba sun mutu a cikin rikici, tare da Castro suna nuna rashin amincewa da mamayewa da kuma kwatanta Amurka da Nazi Jamus. Castro ya ji tsoron mamayewar Amurka a Nicaragua kuma ya aika da Arnaldo Ochoa don horar da Sandinistas masu mulki a yakin basasa, amma ya sami goyon baya kaɗan daga Tarayyar Soviet.