Pedzisa mutsara unotevera: Mhuri yaBačkis muLithuania yakatambudzwa nemaSoviet; munun'una wake Juozas akanga ari
akaendeswa kuSiberia muna June 1941 kwaakafira gore rakatevera racho. Klimas akasungwa neGestapo muna September 1943 izvo zvakasiya Bačkis mukuru wezvematongerwe enyika muFrance. Mugore rimwe chetero, Bačkis akadzivirira rake PhD thesis paLithuanian Concordat (yakaburitswa muLithuanian muna 2007;). Mushure mehondo, France haina kubvuma zviri pamutemo mabasa emumiriri weLithuania, Latvia, kana Estonia, asi yakavabvumidza kushanda zvisina kufanira. Bačkis akaramba achidzidzisa vakuru vakuru vakasiyana-siyana nezvekugara kweLithuania uye nekurova kwekusaziva kweLithuanian SSR kuti ive nechokwadi chekuenderera mberi kwehurumende. Akabudisawo nhau dzezvenhau dzeLithuania (kusanganisira 33 nyaya dze "Questions Lithuaniennes", 8 nyaya dze "Bulletin Lithuanien", uye bhuku rinonzi "Peuples opprimés. La tragédie des Etats Baltes"), akabatsira vapoteri veLithuania, nezvimwewo. Muna 1948, Bačkis akaonana naJuozas Lukša, mutsigiri weSoviet uyo akakwanisa kutiza Iron Curtain, uye akamubatsira kuparadzira ruzivo nezvekurwira kwezvombo. Muna 1949, Komiti yeCentral neEastern European Countries, ichitungamirirwa nomutevedzeri weBritain Harold Macmillan uye ichimiririra marudzi akasiyana-siyana eEastern Bloc, yakatangwa neEuropean Movement. Bačkis akava mutevedzeri wasachigaro weDare muna 1951. Akanga ariwo mumiriri weLithuania kuEuropean Union of Federalists, akabatana neNouvelles équipes internationales (New International Teams), uye Assembly of Captive European Nations. Bačkis akakurudzirawo kudzorerwa kweLithuanian Catholic Academy of Science uye akashanda achiratidza mapepa ekutsvakurudza mumisangano yayo. Muna 1950, akapiwa Order of St. Gregory the Great neVatican.