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.

The U.S. and Iran remain locked in a standoff over uranium enrichment ahead of a potential new round nuclear talks.

As Iranian and American delegations are going to hold a new round of indirect talks in Oman, the foreign minister of Iran deplored the US’s flip-flop, reaffirming that Tehran’s inalienable right to enrichment won’t be subject to negotiations by any means.

DUBAI, United Arab Emirates — Iran and the United States began a fourth round of negotiations Sunday over Tehran’s rapidly advancing nuclear ... talks, again happening in the sultanate of Oman ...

Iran and the United States began a fourth round of negotiations Sunday over Tehran’s rapidly advancing nuclear program, officials said, just ahead of a visit by President Donald Trump to

Iran and the United States began a four Sunday over Tehran’s rapidly advancing nuclear programme, officials said, just ahead of a visit by President Donald Trump to the Middle East this week. The round of talks,