Negotiating with Tehran is time-consuming and difficult under the best of circumstances. And it remains unclear whether President Trump’s 14-day clock is more than a way to buy time for military preparations.

Trump said he was waiting to see “whether or not people come to their senses.”

The move signals the U.S. is getting the bombers in place if they are needed for a strike on Iran, but officials said there had been no order given to ready a B-2 strike.