World War II: The <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwrw" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> invades <a href="https://en.wikipedia.org/wiki/East_Karelia" id="mwsA" rel="mw:WikiLink" title="East Karelia">East Karelia</a> and the <a href="https://en.wikipedia.org/wiki/Karelia_(historical_province_of_Finland)" id="mwsQ" rel="mw:WikiLink" title="Karelia (historical province of Finland)">previously Finnish part of Karelia</a>, occupied by Finland since <a href="https://en.wikipedia.org/wiki/1941" id="mwsg" rel="mw:WikiLink" title="1941">1941</a>.