National security adviser H.R. McMaster declined Thursday morning to say whether or not President Donald Trump plans to withdraw the U.S. from the Iran nuclear deal, saying instead that whatever decision the president announces will be part of a larger administration stance towards Iran.“I’m not saying anything yet about it, but when the announcement is made, it will fit into a fundamentally sound and broad strategy aimed at addressing Iran’s destabilizing behavior and prioritizing protecting American vital interests,” McMaster said Thursday morning on NBC’s “Today” show.Trump, who has spent the week in New York attending meetings on the sidelines of the United Nations General Assembly meeting, said Wednesday that he had come to a decision on whether or not the U.S.