Thanks TigerLikesRooster.
A few years ago the Iranian mullahcracy found itself in a quagmire -- their intervention in Syria was and remains unpopular in Iran, their Hizzies proxies had lost perhaps 50% of their terrorists, and Iran started press-ganging Afghans into service, giving them uniforms, arms, and some training, and dropping them off at the front.
Assad started the Syrian civil war, and it would be nice if he were dead by now, but the slaughter of the Hezbollah took time, so, that's part of the upside. ISIS was brought into Syria to obliterate the other local rebel groups, met the US-backed Kurds, and learned what an ass-kicking is. The Russians evac'd a large group of ISIS after they were cornered and faced annihilation, and as with the Chechens will use them where jihadists are needed and Russian policy dictates.
Afghan Lawmakers Seek To Stop Iran Sending Compatriots To Syria:
Afghan lawmakers are urging their government to undertake a range of bilateral and multilateral diplomatic steps to stop Iran from recruiting Afghans to fight its war in Syria.
Lawmakers are urging Kabul to address the issue after reports emerged this week that more than 10,000 Afghan fighters deployed by Iran to defend the Syrian regime of President Bashar al-Assad have been killed or injured in the past five years.
Fazal Hadi Muslimyar, chairman of Meshrano Jirga, the upper house of the Afghan Parliament, says he wants Kabul to publicly address the issue.
https://gandhara.rferl.org/a/afghanistan-iran-fatemiyoun-division-diplomacy/28967174.html
However, most of these refugees are from the Hazara minority in Afghanistan. This means that for the majority Sunnis it is OK to reduce their number.
Furthermore