The Latest: Trump says Iran proposed negotiations as hundreds killed in protests

U.S. President Donald Trump says Iran has reached out and proposed negotiations after he threatened action in response to a crackdown on protesters. He told reporters aboard Air Force One late Sunday that his administration was in talks to set up a meeting with Tehran, but cautioned that he may have to act first as reports mount of increasing deaths in Iran. Iran did not immediately acknowledge his comments. Activists say the death toll in the crackdown on two weeks of protests in Iran has spiked to at least 544 people.