CNN: Access to Iranian uranium has become more difficult and dangerous than a month ago, sources say.

Iran fortifies uranium storage sites by sealing tunnels and planting mines at entrances, sources tell CNN.

Sources to CNN: Iran has fortified uranium storage sites by sealing tunnels and planting mines at their entrances.

Iran says US MoU could be signed remotely within days as hardliners attack draft; Washington ties relief to nuclear dismantlement; Hormuz tense after CENTCOM downed drones targeting shipping.

Iran says a US memorandum of understanding could be signed remotely within days as hardliners attack the draft, Washington ties relief to nuclear dismantlement, and the Strait of Hormuz remains tense after CENTCOM said it downed drones targeting shipping.

Iranian offensive drone threatens commercial shipping traffic, source says. The incident raises concerns over maritime security in key trade routes.

An Iranian offensive drone has threatened commercial shipping traffic, according to a source.

Senior U.S. official says Iran's pledge not to develop a nuclear weapon is welcome, but verification remains essential, per Times of Israel.

A senior U.S. official said Iran's pledge not to develop a nuclear weapon is welcome, but verification remains essential.