 Complete the following phrase:  Several countries suffered invasions in spite of their efforts to be neutral. These included Nazi Germanys invasion of Denmark and Norway on 9 April 1940then Belgium, the Netherlands, and Luxembourg on 10 May 1940. On the same day, 10 May 1940, the British, having already invaded the Faroe Islands in April, invaded Iceland and established an occupying force subsequently replaced by the then-neutral United States. The Soviet Union invaded Lithuania on 15 June 1940 and Latvia and Estonia on 17 June. In the Balkans, the Italo-Greek War began on 28 October 1940 and 