The Siege of Pskov took place during the final stage of a war that fought for control of what area?
Livonian War The Livonian War (1558–1583) was fought for control of Old Livonia (in the territory of present-day Estonia and Latvia), when the Tsardom of Russia faced a varying coalition of Denmark–Norway, the Kingdom of Sweden, and the Union (later Commonwealth) of the Grand Duchy of Lithuania and the Kingdom of Poland.
Siege of Sirmium The Siege of Sirmium in 580–582 was a decisive event in the history of the Balkans. The fall of the city to the Avars deprived the Byzantine Empire of its major stronghold on the northwestern Danube, opening the path for devastating incursions by the Avars and their Slavic allies into the Balkans.