President Donald Trump threatened North Korea with "fire and fury" Tuesday if Pyongyang doesn't stop threatening the United States. But can the President launch a military strike on his own? The Constitution may give Congress the ability to declare war, but in reality it has little ability to stop the President if he's determined to strike North Korea. That's because the President has his own authority as commander in chief to defend the country from threats, and in practice the Executive Branch has used that authority for a range of military actions.
