Iranian President Mahmoud Ahmadinejad, left, welcomes his Pakistani counterpart Asif Ali Zardari, as he arrives to attend a regional summit meeting with officials from Iran, Afghanistan and Pakistan, meeting in Tehran, Iran, Sunday, May 24, 2009. AP Photo logo AP Photo 33 months ago

Iranian President Mahmoud Ahmadinejad, left, welcomes his Pakistani counterpart Asif Ali Zardari, as he arrives to attend a regional summit meeting with officials from Iran, Afghanistan and Pakistan, meeting in Tehran, Iran, Sunday, May 24, 2009.