Rubuta ci gaba ga wannan sakin layi - Bayan karshen yakin duniya na biyu
, dangantaka tsakanin Soviet da Yammacin Yammacin Turai ya ragu da sauri. Tsohon Firayim Ministan Britaniya Churchill ya yi da'awar cewa mamayar Soviet na Gabashin Turai bayan Yaƙin Duniya na II ya kai 'kwarin ƙarfe da ya rufe nahiyar.' Dangantaka ta kasance gabaɗaya a lokacin Yaƙin Cacar Baki da ya biyo baya, wanda aka nuna ta hanyar leken asiri da sauran ayyukan ɓoye. An kafa aikin Venona na Burtaniya da Amurka a cikin 1942 don bincika saƙonnin da aka aiko ta hanyar leken asirin Soviet. Daga baya aka gano 'yan leƙen asirin Soviet a Biritaniya, kamar Kim Philby da ƙungiyar leƙen asirin Cambridge Five, waɗanda ke aiki a Ingila har zuwa 1963.