Iran’s Revolutionary Guards have arrested prominent lawyer Mostafa Nili, one of more than a dozen rounded up amid a crackdown on protests sparked by Mahsa Amini’s death, his sister said. Guards intelligence agents detained Nili at Tehran’s Mehrabad international airport on Monday night before raiding his mother’s house and taking him into custody, Fatemeh Nili tweeted. Another prominent lawyer, Saeid Dehghan, who is believed to be abroad, confirmed his arrest in a post on Twitter. Nili was one of the “few hopes for citizens against a political system that is the enemy of lawyers” as well as ag…