The Great Northern War was the war fought between a coalition of Russia, Denmark-Norway and Saxony-Poland (from 1715 also Prussia and Hanover) on one side and Sweden on the other side from 1700 to 1721. It started by a coordinated attack on Sweden by the coalition in 1700 and ended 1721 with the conclusion of the Treaty of Nystad. As a result of the war, Russia supplanted Sweden as the dominant Power on the Baltic Sea and became a major player in European politics.
Extensive information on the major battles and campaigns of the Great Northern War can be found as part of these articles:
Northern War (1655-1661)
See also: List of Swedish wars