波兰举行德军入侵75周年纪念
Poland has marked the 75th anniversary of the start of World War Two with a wreath-laying ceremony at Gdansk port.
波兰政府在格丹斯克港举行敬献花圈仪式，纪念二战75周年。
Prime Minister Donald Tusk commemorated the dead of the war's first battle.
Nazi Germany invaded Poland on 1 September 1939, shelling a Polish garrison at Gdansk. Britain and France declared war on Germany two days later.
Polish and German presidents Bronislaw Komorowski and Joachim Gauck will also meet to honour the war dead and discuss the war with young Poles and Germans.
Mr Tusk laid a wreath at a monument to Polish victims of WW2's first battle at 04:45 local time (02:45 GMT).
He also referred to the current conflict between Ukrainian troops and pro-Russia separatists, saying it was not a time for "naive optimism".
Poland has been a strong advocate of sanctions against Russia over Moscow's support for the separatists fighting in eastern Ukraine.