Russo-Swedish War (1741–1743)
The Russo-Swedish War of 1741–1743 (also known as The War of the Hats) was instigated by the Hats, a Swedish political party that aspired to regain the territories lost to Russia during the Great Northern War, and by French diplomacy, which sought to divert Russia's attention from supporting its long-standing ally the Habsburg monarchy in the War of the Austrian Succession. The war was a disaster for Sweden, which lost more territory to Russia.