Iran on Saturday called for an emergency meeting of the UN Security Council following the killing of Hezbollah leader Hassan Nasrallah in an Israeli airstrike in Lebanon. Tehran’s mission to the United Nations in New York called for the 15-member body to meet, according to a letter seen by dpa. Israel had “perpetrated a flagrant act of terrorist aggression against residential areas in Beirut, using U.S.-supplied thousand-pound bunker busters,” Iran’s UN ambassador, Amir Saeid Iravani, wrote in the letter to the most powerful UN body. The timing of the proposed meeting remains uncertain, with d…