Second Northern War
The Second Northern War (1655–60), also First or Little Northern War) was fought between Sweden and its adversaries the Polish–Lithuanian Commonwealth (1655–60), the Tsardom of Russia (1656–58), Brandenburg-Prussia (1657–60), the Habsburg Monarchy (1657–60) and Denmark–Norway (1657–58 and 1658–60). The Dutch Republic often intervened against Sweden in an informal trade war but was not a recognized part of the Polish–Danish alliance.