sentences:  According to these protocols, Finland, Estonia, Latvia and Bessarabia were within the Soviet sphere of interest, and Poland and Lithuania fell into the German sphere of interest.The Soviet Union did not officially admit the existence of these protocols until, under pressure from the Baltic SSRs, on December 24, 1989, the Congress of the USSR People's Deputies officially recognized the secret deals and condemned them as illegal and invalid from their inception.Nazi Germany invaded Poland on 1 September 1939.