<prompt> Bhala ukuqhubeka kwalesi sigaba - ISoviet Union yahlasela iPoland ngo-September 1939 ngaphansi kweSivumelwano sikaMolotov-Ribbentrop neJalimane; iSoviet Union yahlasela iFinland  <response>: ngoNovemba 1939; ngoJune 1941, iJalimane yachitha isivumelwano sokungahlaseli futhi yahlasela iSoviet Union. Yize i-USSR yayinabososayensi nonjiniyela abavelele, yaqala ucwaningo kulokho okwakuzoba yi-radar radiolokatsiya, i-radiolocation ngokushesha nje lapho noma ubani omunye, futhi yathuthuka kahle ngokuthuthukiswa kwe-magnetron yokuqala, yangena empini ngaphandle kohlelo lwe-radar oluhleliwe, olukwazi ngokuphelele. 