Vessel said to have surfaced and faced Persian Gulf, in show of force amid threats over killing of nuclear scientist; in similar move, US sub crosses Straight of Hormuz

Tehran's Foreign Ministry puts blame for repeated maritime incidents on US, after Navy official said sides have reached state of 'uneasy deterrence'

Photos of vessel named after naval commander Abdollah Roudaki show it also carrying truck-launched surface-to-surface and anti-aircraft missiles, and armed speedboats

Tehran summons UAE envoy in protest; Monday incident in Gulf comes as tensions between nations erupt, following Abu Dhabi's normalization pact with Israel

Two days after deal announced, Israeli TV stations interview upbeat Emirati politicians, locals; in the GCC's other 5 countries, by contrast, there's unease at idea of public ties

Ships retreated after warning shots fired in Thursday incident, Riyadh says, amid high tensions with Shiite rival

Moscow calls on Tehran to exercise 'maximum restraint and caution' as tensions rise in Persian Gulf

After Trump orders navy to destroy Iranian gunboats if they harass US ships, Tehran cautions that 'any adventurism, harassment or provocation will be met with a firm reaction'

Ramadan production 'Umm Haroun' causes controversy, as does another Saudi series featuring character urging better relationship with Israel, amid warming Jerusalem-Riyadh ties

Move comes week after small armed IRGC speedboats swarmed American vessels patrolling international waters in northern Gulf, in acts Washington called a provocation