Treaty of Malmö: Sweden and Lübeck agree to pay contribution to Denmark Kalmar Union Sten Sture # Svante Sture Hemming Gadh Knut Alvsson  X King Hans Queen Christina Prince Christian Søren Norby Henrich Krummedige The Dano-Swedish War from 1501 to 1512 was a military conflict between Denmark and Sweden within the Kalmar Union.

The war began with a Swedish and a Norwegian revolt against King Hans and the siege of Queen Christina in her castle in Danish-held Stockholm.

Breaking the rules of safe conduct was considered a grave treachery after the old Norse laws, which were still used in Norway at the time.

Later the same year, Dano-Norwegian military forces under the command of Henrich Krummedige attacked Nya Lödöse and burned the city down.

Fighting intensified in 1509 and 1510 when the German city of Lübeck and the Hanseatic League helped Sweden to conquer Danish-held Kalmar and Borgholm.

The recently established Danish-Norwegian Navy fought joint Hanseatic-Swedish naval forces at Nakskov and Bornholm in 1510 and 1511.