Bunker-busting ordnance is kept at base home to B-2 stealth bombers, the only aircraft that can deploy the bomb; but depth of Natanz tunnels likely presents a serious challenge

Stealth fighters fly alongside B-52 strategic bombers moving through Israeli airspace as they head back from Persian Gulf

American military says flight was meant to demonstrate its ability to send aircraft from UK to the Middle East 'seamlessly,' given tensions in the region

Move comes amid tensions between US, Israel, and Tehran, with Iran tied to missile strikes on US bases and an attack on an Israeli-owned ship in Gulf of Oman

Slamming US president for show of force in region, foreign minister says Tehran will 'openly and directly defend its people, security & vital interests'

Senior military officer says operation meant to warn Tehran against targeting US forces before Biden takes office, comes after Israeli sub said to have openly crossed Suez Canal

Armed groups said making unspecified 'preparations' as tensions in region rise following killing of Mohsen Fakhrizadeh, and ahead of anniversary of Soleimani killing

Second such mission in less than a month designed to underscore America's continuing commitment to region, even as Trump withdraws thousands of troops from Iraq and Afghanistan

Move comes amid reports and speculation Trump administration may take military action against Tehran before Biden enters office

US has said it is sending bombers to counter Tehran, though no details have been provided