President Donald Trump has signaled that “time is running out” for Tehran.

The White House said on Thursday that diplomacy is President Donald Trump's first choice for dealing with Iran and he will wait to see whether a deal can be struck at high-stakes talks, but also warne...

The delicate diplomatic effort comes amid heightened tensions as the U.S. builds up ​forces in the Middle East and regional players seek to avoid a military confrontation that many fear could escalate...