Iraqi militias are working with Iran to send weapons to Russia for use against Ukraine, according to unnamed militia and regional intelligence sources. Hashd al-Shaabi, one of the most influential Iran-backed militias, reportedly transported rocket-propelled grenades, antitank guided missiles, and multiple-launch rocket systems to the Iranian border in late March. The Iranian military then sent the shipment across Iran and via the Caspian Sea to the Russian port of Astrakhan. According to sources involved in the transportation scheme, Iran has also returned an S-300 air defense system to Russia and donated an Iranian-made Bavar-373 air defense system.