DUBAI, United Arab Emirates (AP) — Iran and the United States held a fourth round of negotiations Sunday over Tehran’s rapidly advancing nuclear program, just ahead of a visit by President Donald Trump to the Middle East this week.

Iran is preparing for a visit by Russian President Vladimir Putin, Iran's government spokesperson Fatemeh Mohajerani was quoted by Russia's state RIA news agency as saying on Monday. "Putin's trip to Tehran is currently being worked out,

President Trump on Tuesday offered an “olive branch” to Iran as he projected optimism about the future of the Middle East in remarks from Saudi Arabia. Trump spoke at a U.S.-Saudi

An Iranian official told CNN that recent indirect talks with the United States aimed at addressing Tehran’s nuclear program and lifting sanctions were “not genuine” from the American side and were likely designed from the outset as a “trap to draw the situation toward tension.

Iran will hold talks in Istanbul on Friday with European parties to their now-moribund 2015 nuclear deal, two European and an Iranian diplomatic source said on Tuesday,

President Trump issued this warning to Iran during a speech in Saudi Arabia on Tuesday. "This is an offer that will not last forever. The time is right now for them to choose," Trump said. "Things are happening at a very fast pace.

President Donald Trump set a 60-day time period to conclude a deal with Iran to end its illicit atomic weapons program no later than May 12.

The latest round of high stakes nuclear talks between Iran and the US have ended, with Tehran calling them difficult but with both sides agreeing to further negotiations.

Iran’s Deputy FM says his country may accept temporary limits on uranium enrichment, though no technical details have been discussed yet.