The <a href="https://en.wikipedia.org/wiki/Great_Purge" id="mw3Q" rel="mw:WikiLink" title="Great Purge">Great Purge</a> of the <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mw3g" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> begins when the first of the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Moscow_Trials" id="mw3w" rel="mw:WikiLink" title="Moscow Trials">Moscow Trials</a> is convened.