The U.S. military claimed Tuesday that it has successfully begun to enforce a blockade of Iranian ports, as the standoff between the U.S. and Iran deepens. Tehran threatened to strike targets across the region, a day after Trump warned on social media that any Iranian warships nearing the blockade would be destroyed in a “quick and brutal†strike.

With Pakistan racing to for more talks, U.S. President Donald Trump said Tuesday that a second round “could be happening over the next two days.†The first round ended without an agreement on Iran’s nuclear ambitions, which the White House says is a sticking point.

The Associated Press