Complete the following sentence: After having withdrawn its troops from Bessarabia and Northern Bukovina in response to the
June 1940 Soviet Ultimatum, Romania wọ àjọṣepọ̀ pẹ̀lú Nazi Germany ó sì kéde ogun sí Soviet Union. Awọn ọmọ ogun Romania wọ Ogun Agbaye Keji ni Oṣu Karun ọdun 1941 gẹgẹbi apakan ti Iṣẹ Barbarossa, labẹ Igbimọ giga ti Jẹmánì. Lẹ́yìn tí wọ́n gba àwọn ìpínlẹ̀ tí Soviet Union gbà padà ní June 1940, àwọn ọmọ ogun Romania gba Gúúsù Ukraine títí dé Gúúsù Bug. Àmọ́, ogun tí Romania jà ní ìlà oòrùn òpin sí àjálù, pàápàá jù lọ ní Ogun Stalingrad.