The Russo-Swedish War of 1788–1790 was fought between Sweden and Russia from June 1788 to August 1790. The war was ended by the Treaty of Värälä on 14 August 1790. The war was, overall, mostly insignificant for the parties involved. The conflict was initiated by King Gustav III of Sweden for domestic political reasons, as he believed that a short war would leave the opposition with no recourse but to support him. Catherine II regarded the war against her Swedish cousin as a substantial distraction, as her land troops were tied up in the war against Turkey, and she was likewise concerned with revolutionary events unfolding in the Polish–Lithuanian Commonwealth (the 3 May Constitution) and in France (the French Revolution). The Swedish attack foiled the Russian plans of sending its navy into the Mediterranean to support its forces fighting the Ottomans, as it was needed to protect the capital, Saint Petersburg.