The Nuclear War Tweet Heard Round the World

The world’s most powerful man ignited a stunning new showdown with North Korea late Tuesday, as Donald Trump boasted to volatile leader Kim Jong Un that he had a “much bigger & more powerful” nuclear weapon.
Trump’s flippant comments about his nuclear prowess — akin to “mine is bigger than yours” schoolyard taunts — raise new questions about whether the President has thought deeply about the awesome destructive power at his command.