The US blockade of Iranian ports has been effective since its implementation on April 13, with no ships breaching it. Iran's oil and gas shipments are significantly affected, leading to a buildup of tankers outside the Strait of Hormuz. US President Trump indicated a potential ceasefire extension, while Iran threatens to halt regional trade in response to the blockade. The situation is complicated by various exemptions and the enforcement of maritime regulations. China's UN ambassador criticized the blockade, and Hapag-Lloyd reported difficulties for sailors trapped in the region.