Saudi Arabia has vowed to retaliate after Iran-backed Houthi forces from Yemen struck Saudi cities and energy sites, leaving over 70 people injured, including children. The Houthis claimed the attacks were in retaliation for more than 120 strikes launched by Saudi Arabia on Yemen over the last three days.

The major escalation in fighting came after the U.S. said Saturday it had struck three Iranian oil tankers, disabling two of them and sinking a third. Tehran said it attacked three U.S.-affiliated vessels in response. The tit-for-tat strikes came a day after President Trump played down the U.S. war on Iran as “small potatoes.”

On Monday, Iran’s Supreme National Security Council announced that Tehran is planning a maritime “exclusion zone” outside the Strait of Hormuz where it intends to stop vessels attempting to transit the waterway without Iranian permission.

Mohsen Rezaei: “We are making changes into the Strait of Hormuz. From now on, inshallah, in the coming days and weeks, we’re going to announce a restricted, prohibited zone outside the Strait of Hormuz, which begins from the blockade line of the U.S. Navy, including the Strait of Hormuz, and extends to the Persian Gulf from the other side.”

Meanwhile, U.S. Energy Secretary Chris Wright admitted in an interview on Sunday that there “may not” be an agreement that would prevent Iran from having nuclear weapons.

Martha Raddatz: “There is also no sign of a nuclear agreement. You talk about that. President Trump talks about that. But where’s the sign that they’re going to have a nuclear agreement?”

Energy Secretary Chris Wright: “There may not be a nuclear agreement. It may be simply destroying their capabilities to do it. An agreement may await a next administration in Iran. We simply don’t know that.”