Hammer," the top-secret U.S. precision attack on Iran's nuclear facilities launched overnight was the largest strike using B2 bombers in history and it was the longest flight involving the fleet since 2001,

At around 17:00 EDT (22:00 BST) US officials say more than two dozen Tomahawk land attack cruise missiles were launched from a US submarine stationed in the Arabian Sea towards the nuclear site near Isfahan, a city of about two million people.

The US struck Iran’s heavily fortified Fordow nuclear site with bunker-buster bombs on June 21, marking a major escalation. Long seen as immune to Israeli attacks, the underground facility near Qom was targeted in Operation Midnight Hammer.