Acting on the orders of <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwxg" rel="mw:WikiLink" title="Soviet Union">Soviet</a> leader <a href="https://en.wikipedia.org/wiki/Joseph_Stalin" id="mwxw" rel="mw:WikiLink" title="Joseph Stalin">Joseph Stalin</a>, <a href="https://en.wikipedia.org/wiki/NKVD" id="mwyA" rel="mw:WikiLink" title="NKVD">NKVD</a> agent <a href="https://en.wikipedia.org/wiki/Iosif_Grigulevich" id="mwyQ" rel="mw:WikiLink" title="Iosif Grigulevich">Iosif Grigulevich</a> orchestrates an unsuccessful assassination attempt on exiled Russian revolutionary <a href="https://en.wikipedia.org/wiki/Leon_Trotsky" id="mwyg" rel="mw:WikiLink" title="Leon Trotsky">Leon Trotsky</a> in <a href="https://en.wikipedia.org/wiki/Coyoacán" id="mwyw" rel="mw:WikiLink" title="Coyoacán">Coyoacán</a>, Mexico.