<a href="https://en.wikipedia.org/wiki/Cold_War" id="mwAQY" rel="mw:WikiLink" title="Cold War">Cold War</a>: In <a href="https://en.wikipedia.org/wiki/Philadelphia" id="mwAQc" rel="mw:WikiLink" title="Philadelphia">Philadelphia</a>, <a href="https://en.wikipedia.org/wiki/Harry_Gold" id="mwAQg" rel="mw:WikiLink" title="Harry Gold">Harry Gold</a> pleads guilty to spying for the Soviet Union by passing secrets from atomic scientist <a href="https://en.wikipedia.org/wiki/Klaus_Fuchs" id="mwAQk" rel="mw:WikiLink" title="Klaus Fuchs">Klaus Fuchs</a>.