WASHINGTON — President Donald Trump said he is in no rush to finalize a diplomatic agreement with Iran, signaling that the administration is willing to extend negotiations if necessary to secure what he described as a stronger and more durable deal.During an interview broadcast Saturday on Fox News, Trump said the United States is making progress in discussions with Tehran but emphasized that speed is not his primary concern.“If you're going to be in a hurry, you're not going to make a good deal,” Trump said, while stressing that...