The term Deluge (, ) denotes a series of mid-17th-century campaigns in the Polish–Lithuanian Commonwealth. In a wider sense it applies to the period between the Khmelnytsky (Chmielnicki) Uprising of 1648 and the Truce of Andrusovo in 1667, thus comprising the Polish theatres of the Russo-Polish and Second Northern Wars. In a stricter sense, the term refers to the Swedish invasion and occupation of the Commonwealth as a theatre of the Second Northern War only (1655–1660); In Poland and Lithuania this period is called the Swedish Deluge , and the term deluge (or potop in Polish) was popularized by Henryk Sienkiewicz, in his 1886 book The Deluge.