The Treaty or Truce of Plussa was a truce between Russia and Sweden, which ended the Livonian War (1558-1583). The truce was signed on 10 August 1583 at the Plyussa River north of the city of Pskov. According to the truce, Sweden kept the annexed Russian towns of Ivangorod (Ivanslott), Jamburg, Koporye (Kaprio) and Korela (Kexholm/Käkisalmi) with their uyezds, holding control over Ingria. Russia kept a narrow passage to the Baltic Sea at the estuary of the Neva River, between Strelka and Sestra Rivers.