The United States issued new Iran-related sanctions on Wednesday, according to a notice posted to the U.S. Treasury Department's website.

President Donald Trump labeled Iran as the "most destructive force in the region", while on a high-profile visit to Saudi Arabia, Reuters reported. Newsweek has reached out to the White House for comment.

Iranian officials said their foreign minister had proposed a joint nuclear-enrichment venture, involving Arab countries and American investment.

A fourth round of nuclear talks between the United States and Oman have produced encouraging results for the Trump administration, a senior official told reporters Sunday.

US President Donald Trump voiced hope on Wednesday that diplomatic efforts would succeed on Iran's nuclear programme, even as he vowed rigorous enforcement of sanctions.

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.

In the event of a direct military confrontation with one of its likely opponents in the person of Russia, China, the DPRK or Iran, the United States may enter into a war with the coalition. This was stated in a written statement prepared for hearings in the Armed Forces Committee of the Senate of the US Congress by the head of the Northern Command of the US Armed Forces and the head of the Joint Aerospace Defense Command of North

Nadergholi Ebrahimi has asked Supreme Leader Khamenei to rethink Iran's nuclear policy if negotiations with the U.S. collapse.

President Trump cherishes big, out-of-the-box deals. As he tours the region, Trump should think beyond Iran’s nuclear issue and work to achieve the denuclearization of the entire Middle East.

President Donald Trump’s visit to Saudi Arabia marks a significant shift in U.S. foreign policy in the Middle East.