The Siege of Pskov between 9 August and 27 October 1615 was the final battle of the Ingrian War. Swedish forces under Gustav II Adolf laid siege to Pskov, but were unable to take the city. After a cruel defeat, King Gustavus Adolphus decided not to continue the war with Russia. Sweden already then planned to resume the struggle with Polish-Lithuanian Commonwealth for the Baltic states and was not ready for a war on two fronts. On December 15, 1615 , a truce was concluded, and both parties initiated peace negotiations that ended with Treaty of Stolbovo in 1617. As a result of the war, Russia was denied access to the Baltic sea for about a century, despite its persistent efforts to reverse the situation. That led to the increased importance of Arkhangelsk for its trading connections with Western Europe.