Vilnius Dispute. 1919-39. Poland, Lithuania dispute over city.

Warsaw. 1596 Polish capital. 1655 Sweden destroys. 1795 Prussia. 1807 Napoleon creates Duchy. 1813 Russia. 1815 Kingdom of Poland. 1939-45 Germany occupies.

Warsaw Pact. 1955-91. USSR, Bulgaria, Czechoslovakia, E Germany, Hungary, Poland, Romania. Treaty for the combined defence of Eastern Europe under Soviet supreme command.

Wehlau, Treaty. 1657. Poland renounces suzerainty over Prussia.