Via the Telegraph it looks like the dots of Iranian involvement in Iraq have been connected:

“Austrian sniper rifles that were exported to Iran have been discovered in the hands of Iraqi terrorists, The Daily Telegraph has learned.

More than 100 of the.50 calibre weapons, capable of penetrating body armour, have been discovered by American troops during raids.

The guns were part of a shipment of 800 rifles that the Austrian company, Steyr-Mannlicher, exported legally to Iran last year.

The sale was condemned in Washington and London because officials were worried that the weapons would be used by insurgents against British and American troops.

Within 45 days of the first HS50 Steyr Mannlicher rifles arriving in Iran, an American officer in an armoured vehicle was shot dead by an Iraqi insurgent using the weapon.

Over the last six months American forces have found small caches of the ¬£10,000 rifles but in the last 24 hours a raid in Baghdad brought the total to more than 100, US defence sources reported”

While we are past the denials of Ahmadinejad, this is the most damning and personal evidence collected. One wonders if HS50 Steyr Mannlicher was used in the video footage shown by CNN.