Rafael Mariano Grossi, the Argentine head of the International Atomic Energy Agency in Vienna, says there needs to be guardrails around how countries could use

Rafael Mariano Grossi, the Argentine head of the International Atomic Energy Agency in Vienna, says there needs to be guardrails around how countries could use autonomous weapons, but innovation can't be stifled. He speaks during a town hall event moderated by Bloomberg Television in the UN’s Genera…