<a href="https://en.wikipedia.org/wiki/Cold_War" id="mwAWo" rel="mw:WikiLink" title="Cold War">Cold War</a>: <a href="https://en.wikipedia.org/wiki/George_H._W._Bush" id="mwAWs" rel="mw:WikiLink" title="George H. W. Bush">George H. W. Bush</a> and <a href="https://en.wikipedia.org/wiki/Mikhail_Gorbachev" id="mwAWw" rel="mw:WikiLink" title="Mikhail Gorbachev">Mikhail Gorbachev</a> sign a <a href="https://en.wikipedia.org/wiki/Treaty" id="mwAW0" rel="mw:WikiLink" title="Treaty">treaty</a> to end <a href="https://en.wikipedia.org/wiki/Chemical_weapon" id="mwAW4" rel="mw:WikiLink" title="Chemical weapon">chemical weapon</a> production.