Novgorod War

The Novgorod War was a war between Sweden and Novgorod

Background
Sweden had interests in Karelia since the Treaty of Noteborg delineated the border between it and Novgorod. In 1446, Novgorod was invaded by Muscovy which took place during the Swedish War for Independence.

The War
Sweden declared war on Novgorod on 24 April 1447, a little more than two years after they declared independence. Troops led by Gustav I Drake skipped the Swedish claims of Noteborg and Ingermanland and went straight for (Veliky) Novgorod, the capital of Novgorod the country. The troops unintentionally engaged Novgorodian ones in Novgorod province and wiped out more than 7,000 troops. The resulting siege ended on 24 July 1448, and nearby Ingermanland and Ladoga were occupied shortly after. (Noteborg was under Muscovite control.) This led to a "stalemate" in which Sweden refused to sign peace without gaining Noteborg, and Muscovy refused to sign peace without Novgorod province. Meanwhile, the vast Novgorodian navy blockaded much of Sweden proper and Finland, though very few troops actually invaded.

End
Muscovy signed peace with Novgorod on 31 January 1450, and Noteborg was occupied thereafter. The Treaty of Borga was signed on 27 March 1450 which ceded Noteborg, Ingermanland, Ladoga, and Veliky Novgorod to Sweden, along with a flat payment of 13 ducats and additional war reparations. Veliky Novgorod was later renamed to Gustavstad to prevent confusion.