Planned memorial in Berlin to mark violent deaths of more than 5 million of Poland's citizens, including some 3 million Jews

Berlin gives green light for Warsaw to re-export five Mig-29s that previously belonged to the East German military

Poland wants compensation for damage caused by Nazi occupation, taking the matter to the UN

Formal demand for reparations over Nazi German occupation signed by Warsaw's foreign minister; Berlin has said it considers the matter settled

Foreign ministry points to 1953 decision by Warsaw to renounce claims against East Germany; Polish opposition parties dismiss demand as a domestic political ploy

'We want to remember and we will remember,' says Germany's President Frank-Walter Steinmeier in Polish city of Wielun, where first World War II bombs fell 80 years ago