GDANSK, Poland (AP) — The outbreak of World War II 75 years ago shows why Europe must put an end to the war in Ukraine now, Poland’s prime minister said Monday.

Prime Minister Donald Tusk, chosen by EU leaders to be the next president of the European Council, spoke at the Westerplatte peninsula on the Baltic coast, where some of the first shots of World War II were fired on Sept.1, 1939, by the Nazi warship Schleswig-Holstein. Two weeks later Soviet troops invaded from the east, acting on a Moscow deal with Germany to carve up Poland.