<a href="https://en.wikipedia.org/wiki/Cold_War" id="mw4g" rel="mw:WikiLink" title="Cold War">Cold War</a>: Twelve nations sign the <a href="https://en.wikipedia.org/wiki/North_Atlantic_Treaty" id="mw4w" rel="mw:WikiLink" title="North Atlantic Treaty">North Atlantic Treaty</a> creating the <a href="https://en.wikipedia.org/wiki/NATO" id="mw5A" rel="mw:WikiLink" title="NATO">North Atlantic Treaty Organization</a>.