WASHINGTON - US President Donald Trump said on Friday Iran will not acquire nuclear weapons but declined comment on whether he may consider the use of force against it."I don't talk about whether or not I would use military force," Trump told a joint news conference with German Chancellor Angela Merkel. "But I can tell you this, they will not be doing nuclear weapons. That I can tell you. OK? They are not going to be doing nuclear weapons. You can bank on it."