ISIS obtained 40 kilograms of what the International Atomic Energy Agency considers “low grade” nuclear material after capturing Iraq’s Mosul University in June. The announcement cameWednesday night when Reuters released a letter sent by Iraq’s UN ambassador to Secretary-General Ban Ki-moon.

United State Officials have downplayed the risk the theft poses, saying the quality of the material makes it extremely difficult to weaponize. RT’s Meghan Lopez visited the State Department to get more information.