Original: Due to a change in Bonn 's foreign policy deviced by Scheel together with Chancellor Willy Brandt , the Federal Republic of Germany gave up claims on former territories ceded to Poland , Czechoslowakia and the USSR in 1945 and officially recognized the existence of the GDR .
Simplified: With Willy Brandt his foreign policy meant the Federal Republic of Germany promised not to try and get back the parts of Germany given to Poland and the USSR .