Iran's demands and mediation efforts

United States President Donald Trump said the US will target civilian infrastructure if Iran doesn't open the Strait of Hormuz. He has given Iran a deadline of tomorrow to reopen the passage. But what happens if that deadline passes? And why are some vessels already allowed to pass through?

Meanwhile, new shipping routes are opening in the Arctic. We hear why the United States is investing in a new fleet of icebreakers.

Plus, a new Super Mario movie has become a box office success, despite early doubts.