Kunyange zvazvo aivenga hurumende yechiuto yeArgentina, Castro akaitsigira muHondo yeFalklands ya1982 yairwiwa neUnited Kingdom uye akapa maArgentina rubatsiro rwemauto. Castro akatsigira kuruboshwe New Jewel Movement iyo yakatora masimba muGrenada muna 1979, yakatumira vanachiremba, vadzidzisi, uye mahunyanzvi kubatsira kusimudzira nyika, uye yakaita hushamwari neMutungamiri weGrenadine Maurice Bishop. Apo Bhishopi akaurawa mukubvuta kwaitsigirwa neSoviet naMarxist Bernard Coard muna October 1983, Castro nokungwarira akapfuurira kutsigira hurumende yeGrenada. Zvisinei, U.S. yakashandisa kudengenyeka senheyo yokupinda muchitsuwa chacho
. Vashandi vokuCuba vokuvaka vakafa muhondo yacho, Castro achishora kupindirwa kwacho ndokuenzanisa U.S. neNazi Germany. Castro aitya kuti United States yaizopinda muNicaragua ndokutuma Arnaldo Ochoa kunodzidzisa maSandinista aitonga hondo yevagandanga, asi haana kuwana rutsigiro rukuru kubva kuSoviet Union.