US Naval Blockade of Iran to include taking all Iran sanctioned ships in oceans of the world, says Gen. Caine, chairman of the US Joint Chiefs of Staff. Caine says-The U.S. "will actively pursue any Iranian-flagged vessel or any vessel attempting to provide material support to Iran. This includes dark fleet vessels carrying Iranian oil. As most of you know, dark fleet vessels are those illicit or illegal ships evading international regulations, sanctions or insurance requirements.” It will also include ships carrying war supplies. Most of Iran's 1.6 million barrels a day of exports goes to smal independent refineries on the eastern coast of China, which are known as "teapot" refineries.