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Dutch-Swedish War

Dano-Swedish War (1658–60)
Part of the Second Northern War
Stormningen av Köpenhamn 11 feb. 1659.jpg
Copenhagen, 11 February 1659. The Danish defenders fire at the attackers.
Date August 5, 1658 – May 26, 1660
Location Denmark, Norway
Result Dano-Norwegian victory
Territorial
changes
Treaty of Copenhagen; Bornholm and Trøndelag returned to Denmark-Norway. Established present day political borders between Denmark and Sweden.
Belligerents
 Sweden Denmark Denmark–Norway
 Dutch Republic
Wappen Mark Brandenburg.png Brandenburg-Prussia
Chorągiew królewska króla Zygmunta III Wazy.svg Polish-Lithuanian Commonwealth
Commanders and leaders
Sweden Charles X Gustav
Sweden Carl Gustaf Wrangel
Sweden Gustaf Otto Stenbock
Denmark Frederick III
Denmark Hans Schack
Denmark Jørgen Bjelke
Dutch Republic Jacob van Wassenaer Obdam
Dutch Republic Michiel Adriaanszoon de Ruyter

The Dano-Swedish War of 1658–60 (Danish: Anden Karl Gustav-krig, Swedish: Karl X Gustavs andra danska krig, Dutch: Zweeds-Nederlandse Oorlog) was a war between Denmark–Norway and Sweden. It was a continuation of an earlier conflict between the two belligerents which had ended just months earlier, after Sweden and Denmark brokered a peace agreement in Roskilde in 1658. In the aftermath of that conflict, the Swedish king Charles X Gustav desired to add the province of Royal Prussia in Poland to the Swedish realm, but his position in the region was not strong enough with the opposition of Brandenburg and Austria. However, the Danes stalled and prolonged the fulfillment of some provisions of the earlier peace; the Swedish king decided to use this as a pretext to attack with an ambitious goal: to vanquish Denmark as a sovereign state and raze the capital of Copenhagen. A quick and decisive defeat of Denmark was however only seen as a means to a greater end. The long-term goal was to wage war in Europe without fearing Danish interference.

The Swedish army surrounded Copenhagen, hoping to starve it into submission. This failed when the Dutch Republic joined the conflict on the Danish side and a reinforcing fleet managed to smash its way through the Swedish naval forces in Øresund. Charles then tried a decisive assault on the city, hoping to conquer it and win the war; this plan likewise failed. Brandenburg, Poland and Austria then also joined the war against the Swedes.

Charles X fell ill in early 1660 and died in February of that year. With the death of the Swedish king, one of the major obstacles to peace was gone and the Treaty of Oliva was signed with the Allies (the Poland, Austria and Brandenburg). However, the Danes were not keen on peace after their recent successes and witnessing the weakness of the Swedish efforts. The Dutch retracted their blockade, but were soon convinced by the Danes to support them again. The French and English intervened for the Swedish and the situation was again teetering on the edge of a major conflict. However, the Danish statesman Hannibal Sehested negotiated a peace treaty without any direct involvement by foreign powers and the conflict was resolved with the Treaty of Copenhagen, where Sweden was forced to return Bornholm to Denmark and Trøndelag to Norway. The treaty of 1660 established political borders between Denmark, Sweden and Norway which have lasted to the present day.


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Wikipedia

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