<div>Presidents of Iran, Turkey and Russia met today for their second tripartite summit in under six months, aiming to speed the peace process for Syria and bolster their influence in the country.</div>''<div><br />''</div>''<div>Turkish President Recep Tayyip Erdogan hosted his Russian and Iranian counterparts Vladimir Putin and Hassan Rouhani in Ankara at his presidential palace for a meeting that could have a critical bearing on developments in Syria.</div>''<div><br />''</div>''<div>The meeting is the second such tripartite summit after the first hosted by Russian President Putin in November in the Black Sea city of Sochi and will be a new symbol of the increasingly deep cooperation.</div>