Without a previous declaration of war, Russian troops cross the border to Sweden at <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Abborfors" id="mwNw" rel="mw:WikiLink" title="Abborfors">Abborfors</a> in eastern Finland, thus beginning the <a href="https://en.wikipedia.org/wiki/Finnish_War" id="mwOA" rel="mw:WikiLink" title="Finnish War">Finnish War</a>, in which Sweden will lose the eastern half of the country (i.e. Finland) to Russia.