"We are working to achieve a joint agreement on security issues with Iraq," Araghchi said.
The withdrawal of US troops from Al-Asad Airbase in the west of Iraq is "proof of the strengthening of our security cooperation with Iraq," Araghchi added.
On Saturday, Ain al-Asad airbase came under the full control of the Iraqi army following the withdrawal of US-led international coalition forces fighting the Islamic State terrorist group*.
In January 2020, the airbase was hit by an attack from Iran's Islamic Revolutionary Guard Corps, just a few days after the killing of top Iranian military commander Qassem Soleimani and some of his fellow officers in a US drone strike in Baghdad.
*A terrorist organization outlawed in Russia and many other countries