Last month’s most alarming headline was another threat from Vladimir Putin to point new missiles at “centers of decision-making,” such as Washington. Why does he make these threats? Russia’s nuclear program, the biggest in the world in terms of warheads, exists to grab attention. That’s why Putin has spent significant amounts of his national address time over the past two years speaking of Russia’s new crop of nuclear weapons. All nuclear weapons are a humanitarian threat… U.S. News & World Report Photo: kremlin.ru