Seventeen members of the Iranian Revolutionary Guard died on Saturday in a massive explosion at an ammunition depot west of Tehran. The dead included General Hasan Moghaddam, a key figure in Iran’s missile program. The explosion destroyed the base which housed Iran’s stockpile of Shahab missiles, a missile capable of reaching Israel. Iran said the explosion occurred while military personnel were transporting munitions, but Time Magazine quotes an unnamed Western intelligence source saying the Israeli spy agency, Mossad, carried out the attack.