The president posted on social media that he would be “making a Speech to the Nation” at 9 p.m. EDT on Thursday.

Trump appeared to refer to himself in the third person in the post.

He did not disclose the details of his planned speech, but the announcement comes after Trump said he would block Iran-related ships from traveling through the Strait of Hormuz and that the U.S. would charge a 20% fee on all cargo going through the waterway.