BBC - Iranian speedboats approached US warships in two previously undisclosed incidents in the Strait of Hormuz in December, a US Navy official has said.

BBC - The US military has released video and audio recordings of Iranian boats that it says threatened to blow up US Navy vessels in the Strait of Hormuz.

Daily Telegraph - Video shows Iranian 'provocation' of US forces.

BBC - Five Iranian speedboats harassed three US navy ships at the weekend, approaching them and radioing a threat to blow them up, US officials say.

CNN - Iranian boats 'harass' U.S. Navy, officials say.

Washington Post - U.S. Expresses Alarm After Iranian Boats Threaten Three American Vessels.

Novosti -Iran's Navy commissioned Wednesday a domestically designed and produced light submarine featuring extended stealth capability and strong firepower.

NBC - Is Iran developing a cruise missile capability for its Kilo-class submarines to match the Israeli's capability?