Despite the progress made with Iran, a briefing sparked even more debate over Trump’s military power. Sen. Mike Lee joins to clarify why the meeting was “the worst” and why he believes Trump agrees. Meanwhile, Iran refuses to hand over the black box of the Ukrainian airliner that crashed near Tehran. And is Prince Harry's and Meghan Markle’s step away from royal duties the beginning of the monarchy’s end? CNN has settled with Covington Catholic student Nick Sandmann in a massive lawsuit. Political scientist Ian Bremmer provides a rare dose of free thinking on Congress, World War III rumors, and China. And author Mark David Hall addresses the big question in his new book, “Did America Have a Christian Founding?”