<a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwsg" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> enters <a href="https://en.wikipedia.org/wiki/International_Civil_Aviation_Organization" id="mwsw" rel="mw:WikiLink" title="International Civil Aviation Organization">ICAO</a>, making Russian the fourth official language of organization.