1945 1 January Provisional Government of the Republic of Poland replaces PKWN , Mikolajczyk accepts Deputy Premiership ; 4 – 11 February Yalta Conference , Poland not invited ; 28 June resigns post of Treasury Minister ; 6 July UK and US withdraw recognition of Polish Government-in-exile , loss of embassy in London ; 17 July-7 August at Potsdam Conference Provisional Government accepted as official Polish government by Big Three , Polish borders redrawn
Potsdam Conference
Potsdam Conference
Jan Kwapiński