eg here:
http://nypost.com/2025/06/16/us-news/trump-warns-everyone-should-immediately-evacuate-tehran-in-ominous-truth-social-post/

President Trump warned that “everyone” in Tehran should “immediately evacuate” in an alarming Monday night Truth Social post as it was revealed he would be leaving the G7 summit a day early due to the Iran-Israel conflict.

“Iran should have signed the ‘deal’ I told them to sign. What a shame, and waste of human life. Simply stated, IRAN CAN NOT HAVE A NUCLEAR WEAPON. I said it over and over again! Everyone should immediately evacuate Tehran!” Trump posted on social media.

About an hour later, White House press secretary Karoline Leavitt tweeted that the president would be departing the G7 in Canada early “because of what’s going on in the Middle East.”

“I have to be back early for obvious reasons,” Trump told reporters ahead of his departure from the summit.

“We had a, just a really great relationship with everybody and it’s really nice. I wish I could stay for tomorrow, but they understand. This is big stuff.”

The commander in chief, according to an NBC News report and Fox News host Lawrence Jones III, asked the National Security Council to be ready in the Situation Room upon his return to Washington, DC.