Bayan faduwar Faransa a watan Yunin 1940, Burtaniya da daular sun tsaya kadai a kan Jamus, har zuwa mamayar Jamus ta Girka a ranar 7 ga Afrilu 1941. Firayim Ministan Burtaniya Winston Churchill ya yi nasarar lallashe Shugaba Franklin D. Roosevelt don taimakon soja daga Amurka, amma Roosevelt bai shirya ba tukuna don neman Majalisar Dattijai ta sa ƙasar ta shiga yaƙi. A watan Agusta 1941, Churchill da Roosevelt sun hadu kuma sun sanya hannu kan Yarjejeniyar Atlantic, wanda ya haɗa da sanarwa cewa "hakkin dukkan mutane na zaɓar nau'in gwamnatin da suke rayuwa a ƙarƙashin" ya kamata a girmama.
Winston Churchill (Winston Churchill) da kuma