The immense buildup of U.S. military forces in the Middle East has the world on edge waiting for a decision from President Donald Trump on whether he will take action against Iran. As negotiators discuss a potential nuclear agreement, Trump and his top aides have seemingly set this week as the critical stretch to reach a deal. But the prospect of a limited strike on the country remains. Playbook's Jack Blanchard and White House Bureau Chief Dasha Burns break down the latest signs from the White House and what might come next.