President Donald Trump said Iran has “agreed to everything” in negotiations with the United States, including a plan to remove its enriched uranium stockpile, but left key questions unanswered about how such an operation would be carried out. In a phone interview with CBS News, Trump insisted the arrangement would not require U.S. ground troops, even as he described an American role in physically retrieving the material. “No. No troops,” Trump said. “We’ll go down and get it with them, and then we’ll take it.” Pressed on who exactly would handle the operation, the president offered only a vague answer:...