Iran's negotiating delegation has left Tehran for a third ​round of nuclear talks with the U.S., ​state media reported on Wednesday, even as other Iranian officials slammed comments made by President Donald Trump during his state of the union address.

Trump warns Iran in State of the Union: "I will never allow the world's number one sponsor of terror to have a nuclear weapon" while signaling diplomacy.

President Trump said Iran is working to build missiles that could "soon" strike America. U.S. intelligence reports have offered a more cautious view.

General Dan Caine has warned that strikes against Iran could be risky, potentially drawing the US into a prolonged conflict, US media report.

During his State of the Union address, Trump indicated he was considering attacking Iran if it refused to give up its nuclear program and effort to build long range missiles.

After ordering the largest American military buildup in the Middle East since the onset of the Iraq War, President Donald Trump now has a decision to make on Iran.

The next round of talks between the US and Iran in Geneva on Thursday could be decisive in the president's decision-making.

A U.S. trial is underway for a Pakistani man accused in a plot to carry out political assassinations, including potentially of President Donald Trump.