On Global News Today on Al Arabiya English, Tom Burges Watson covers a dramatic escalation in the Iran crisis after President Donald Trump announced that the United States is reinstating a blockade of Iranian ports in the Strait of Hormuz, effective immediately.Trump says the US will act as the “guardian” of one of the world’s most strategically important shipping lanes and impose a 20 percent charge on cargo passing through the Strait to fund maritime security. Iran has rejected the move, warning that it will not allow Washington to interfere in the management of the vital waterway.The announcement comes as US and Iranian forces continue exchanging strikes. US Central Command says it targeted an Iranian submarine and a naval maintenance facility after Tehran allegedly attacked commercial shipping in the Strait of Hormuz, raising fears of a wider regional conflict and disruption to global energy supplies.Tom Burges Watson speaks to Mick Mulroy, Former US Deputy Assistant Secretary of Defense for the Middle East, and Jasmine El-Gamal, Former Middle East Advisor at the Pentagon.