Ready to support Assad's forces battling Islamist insurgents, they were heading to northern Syria according to Reuters, who spoke to two Syrian army sources.
Chris Doyle, director of the Council for Arab British Understanding in London, told Iran International: “The whole situation is extremely fluid but Iran will be sure to shore up its position as it’s very conscious of losing ground across the region after Hezbollah has been politically and military degraded.”
In recent months, Israel has taken out swathes of the group's leadership in targeted strikes as well as at least 1,500 operatives in two days of synchronized explosions of the group's pagers and walkie-talkies.
Reuters reported that dozens of Iran-aligned Iraqi Hashd al Shaabi fighters from Iraq also crossed into Syria through a military route near Al Bukamal crossing.
"These are fresh reinforcements being sent to aid our comrades on the front lines in the north," a senior Syrian army source told Reuters, adding the militias included Iraq's Kataib Hezbollah and Afghan Fatemiyoun groups sent by Iran.
Doyle noted that this aligns with Iran's typical approach, leveraging its regional allies to bolster its influence and support.
“They prefer to do that than use uniformed Iranian military,” he added. “It will be a contest now between regional actors such as Iran and Turkey, Russia and the US and Israel. What will get lost in this is the agenda of the Syrian people.”