The Treaty of Frederiksborg was a treaty signed at Frederiksborg Castle, Zealand, on 3 July 1720 (14 July 1720 according to the Gregorian calendar), ending the Great Northern War between Sweden and Denmark-Norway. Their Danish-Swedish part of the conflict began in 1700 but peace was restored the same year. Denmark rejoined the war in 1709 in a campaign to regain their lost provinces, Scania, Blekinge and Halland. However the Swedish general Magnus Stenbock managed to defend the provinces without presence of the king, Charles XII. On other fronts Sweden was not so lucky, primarily at the hands of Russia in 1721, and the destruction of the Swedish army from Stralsund, Swedish Pomerania.