The release of the three-volume report was the focus of national observances of the anniversary of the Second World War, which began Sept. 1, 1939, with Nazi Germany's bombing and invasion of Poland.

WARSAW, Poland — A parliamentary commission in Poland reported Friday that the country lost more than five million citizens and over $54 billion dollars (46.6 billion euros) worth of assets under its ...

FILE - A man with Polish flag places flowes after a wreath laying ceremony to commemorate the Nazi-German invasion of Poland and the beginning of WWII ,75-years ago, at the memorial to Polish ...

Mr. Nawrocki is the president of the Institute of National Remembrance, which researches modern Polish history and investigates crimes from the Nazi occupation and the Communist period, among others.