President Donald Trump said Tuesday that the U.S. will keep up its strikes in Iran into next week, warning that it will hit the country “very hard” as tensions over the Strait of Hormuz continue to simmer.

In an interview with Fox News, Trump said the U.S. is “hitting every single thing that they [Iran] have along the shore.” He stressed the need to keep the Strait open and claimed it would take Iran 20 years to rebuild from the damage.

When asked if the strikes will continue, Trump said they would “until I say that’s enough.” He ruled out a ground campaign but noted the U.S. has “people that will do the ground campaign” on its behalf.

“I’ll save the energy targets for last,” Trump said, adding that the U.S. will “ultimately” hit Iranian energy infrastructure. He also said the U.S. intends to hit bridges and power plants next week “unless they [Iran] get to the table and negotiate,” insisting Iran has “no choice” but to make a deal.

Trump Slams Obama Deal

Trump delivered sharp criticism of the 2015 Iran Nuclear Deal signed under former President Barack Obama, calling it a “worthless piece of paper.” He reaffirmed that any deal he signs would be a “wall” and that there would be “no nuclear weapon.”

Trump also said the Strait of Hormuz is open to all shipping vessels except Iranian ships, which he said cannot go in and out of Iran. He outlined that the U.S. is building pipelines. “We’re coming up with great alternatives, including Texas, including Alaska,” Trump said.

Trump Abandons Strait of Hormuz Fee

The comments come as Trump announced he had abandoned the idea of a 20% fee on cargo ships traversing the waterway, touting major investments by Gulf states in the U.S. instead.

Meanwhile, U.S. Central Command (CENTCOM) said it continues to hit targets in Iran and reaffirmed that a naval blockade of the waterway is in place.