CENTCOM commander Adm. Brad Cooper says a blockade of Iranian ports "has been fully implemented," as the U.S.-Iran impasse over control of the Strait of Hormuz continues amid a delicate ceasefire.

Updated marine traffic map of Iran shows ships near blocked Strait of Hormuz. The escalation may further increase gas prices; Iran condemns "piracy."

The US is pressing ahead with a naval blockade of the Strait of Hormuz to curb Iran’s oil exports. Meanwhile, an Iraq-bound supertanker that aborted a weekend attempt to cross the strait into the Persian Gulf is now sailing through the waterway,

Iran's Fars News Agency says a supertanker sailed through international waters and the Strait of Hormuz with its tracking system switched on, "without any concealment."

U.S. Central Command said Wednesday that nine ships have obeyed orders from American forces while attempting to break a blockade of Iranian ports.

The U.S. blockade of the Strait of Hormuz appeared to be working on Wednesday, as marine trackers reported no Iran-linked ships entering or exiting the strait since the blockade began on Monday.

Iran’s foreign ministry spokesman Esmail Baghaei said the U.S. blockade of the Strait of Hormuz was provocative, counter-productive and contrary to international law.

Iran is moving roughly 20 million barrels of oil through covert offshore networks near Malaysia to bypass the U.S. blockade, Windward AI says.