U.S. and Iranian negotiators remain “very far apart," Leavitt said, as Trump raises fears of an attack by sending more military forces to the region.

US warns Iran to reach a deal or face strikes as Tehran and Moscow announce joint naval exercises in the Sea of Oman.

President Trump is sending the USS Gerald R. Ford, the world’s largest warship, to the Middle East, along with a huge fleet of aerial refueling tankers and F-22 and F-35 strike fighters, according to reports.

Iran on Thursday issued a notice to airmen (Notam) that it is planning to launch rockets in areas across its south amid the looming threat of US airstrikes on the West Asian nation.

The day before nuclear talks were set to resume, Iran conducted live drills in the Strait of Hormuz, a strategic waterway for oil and gas shipments.

Satellite images show that Iran has been reinforcing key military and nuclear facilities, including sites struck by the US and Israel last year, as possible war looms between Tehran and Washington. The hurried work has begun at several bases across Iran,

Iran temporarily shut part of the key Strait of Hormuz as tensions with the US continue to mount. Tuesday’s move is the first time the Middle Eastern waterway has been closed since the 1980s, and came as Iran’s ayatollah issued fresh threats against the United States.

BBC Verify confirms location of US aircraft carrier USS Abraham Lincoln near Iran using satellite imagery, as US and Iranian officials set to meet in Switzerland today for talks.