"“I was hearing every day many Afghan refugees are going to fight for Iran and Bashar al-Assad in Syria and that was a big question in my mind. Why were they going?†he recalled. “Every week, I could see around 10 to 15 young men being brought back for burial in Mashhad. The Iranian authorities misuse the word ‘martyr’ whenever and wherever it suits them."
So why aren't they going to fight in Afghanistan? Not being paid, I guess. Taliban are mining and selling heroin.