Day one of the trip saw the two sides announce a $142bn (£107bn) arms deal, as well as a raft of other investments that Saudi Arabia's crown prince said could eventually be worth $1tn. Trump also made Saudi Arabia the first foreign stop during his first term, in 2017. The rest of his gulf tour will include stops in Qatar and the UAE.

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

The department imposed sanctions on Huangdao Inspection and Certification Co., stating they have been providing oil cargo inspection services to ships already sanctioned for carrying Iranian oil. CCIC Singapore PTE, an export company, was also on the list.

DUBAI (Reuters) - Recent U.S. sanctions on Iran are not constructive when it comes to negotiations, Iran's foreign ministry spokesperson Esmaeil Baghaei said on Tuesday, after the two countries held a fourth round of nuclear talks on Sunday in Oman.

The United States on Monday sanctioned three Iranians and a related technology firm on accusations of advancing Tehran's nuclear weapons research.