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In page Battle of Narva (1700):

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During November, Russian troops surrounded the city of Narva in Estonia (part of the Swedish Empire at the time), attempting to secure its surrender via siege. A Saxon-Polish army commanded by August II and Steinau was outside Riga in Swedish Livonia. The Saxon-Polish army, however, had gone into winter camp south of the river Daugava so Charles XII decided to deal with the more immediate Russian threat against Narva, which was under siege by Peter's forces.[5]:686