BREAKING: 10 American Sailors Held By Iran

Two Navy boats with as many as 10 sailors are being held by Iran .Pentagon spokesman Peter Cook said told AP it has received assurances that the crew and vessels will be returned "promptly."

UPDATE

Breaking: - Two Navy craft detained by Iran. -Ships were en route to Bahrain from Kuwait. -Iran has assured U.S. that sailors are safe.

— Capital Journal (@WSJPolitics) January 12, 2016

UPDATE 2

Picked up by hardline Revolutionary Guard

UPDATE 3

CNN's Barbara Starr: Sailors will not be released until tomorrow morning.