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,

Just as the talks got underway in Geneva, Iranian state media reported that parts of the strategic Strait of Hormuz will close while Iran’s Revolutionary Guard conducts military drills.

Iranian naval forces began military exercises Monday in the strategic waterway of the Strait of Hormuz, the day before a second round of talks with the United States for a nuclear deal amid heightened tensions.