Iranians staged new protest actions Thursday in defiance of a crackdown by the authorities as a rights groups said an 18-year-old became the latest teen killed in clashes in the northwest. Iran has for over six weeks been gripped by protests sparked by the death of Mahsa Amini who had been arrested by the notorious morality police – a movement that poses the biggest challenge to the Iranian government since the 1979 revolution. The clerical leadership under Ayatollah Ali Khamenei, 83, hasresponded with a crackdown that as well as killing dozens has seen 1,000 people charged so far and accordin…