Trump claims U.S. sank all Iranian mine-laying ships, not clear if Iran has mined Strait of Hormuz

WASHINGTON, March 16 (Xinhua) -- U.S. President Donald Trump said Monday the U.S. forces have sunk all the Iranian mine-laying ships but it remains unclear if Iran has started laying mines in the Strait of Hormuz, through which a fifth of the world's oil passes.

"We don't know that they have dropped any in," Trump said at a press conference.

"With more than 30 mine-laying ships destroyed, we hit, to the bes