
McCain's campaign later tried to retract his retraction, however, making the case that there was evidence that Al Qaeda and Iran are, in fact, cooperating. The campaign cited this report from the American Enterprise Institute, which declared:"Iran is the principal source of weapons, funding, training, and on-site advisers for a number of Sunni and Shiite insurgent and terrorist groups in Iraq."
From the beginning, Iran did not confine its support of anti-American fighters to Shia groups. It also supported Ansar al-Islam, a radical Sunni terrorist group with close ties to al Qaeda. ... More recently, Iranian arms dealers have supplied new weapons to al Qaeda in Iraq. A supply of arms flowed from Iran into al Qaeda strongholds in Salman Pak and Arab Jabour, presumably from the Iranian border to the south and east. From there, al Qaeda transported the munitions to Baghdad.
Are Iran and Al Qaeda in cahoots? | redblueamerica.com