The United States and the <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwmw" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> establish formal <a href="https://en.wikipedia.org/wiki/Soviet_Union–United_States_relations" id="mwnA" rel="mw:WikiLink" title="Soviet Union–United States relations">diplomatic relations</a>.