U.S. naval moves in the Gulf

The United States military said it began blocking ships entering or leaving Iranian ports on April 13, pushing American forces deeper into the Strait of Hormuz crisis. (centcom.mil) United States Central Command said the order applies to vessels of “all nations” using Iranian ports on the Arabian Gulf and Gulf of Oman. The command said traffic to and from non-Iranian ports through the Strait of Hormuz would not be impeded. (centcom.mil) By April 14, United States military officials said six merchant ships had turned back and no vessels had made it past the blockade into or out of Iranian ports. Reuters reported the warning to ships was blunt: reverse course or face force. (msn.com) The geography makes the move consequential. The Strait of Hormuz is the narrow sea lane between Iran and Oman that carries a large share of the world’s seaborne oil, so any military enforcement there quickly hits shipping, insurance and energy markets. (npr.org) This step followed a broader escalation in and around Iran after the United States and Israel struck Iranian targets in late February, and after failed talks in Pakistan over ending the war. President Donald Trump said on April 12 that the Navy would stop ships tied to Iranian ports. (apnews.com, msn.com) The Navy had already started moving surface combatants back through the chokepoint. United States Naval Institute News reported on April 11 that the destroyers USS Frank E. Peterson and USS Michael Murphy had transited the strait, the first American warships to do so since the current U.S.-Israel offensive began on February 28. (news.usni.org) American officials have framed the operation as a targeted port blockade, not a closure of the entire waterway. Defense reporting and Central Command statements both said the enforcement line is aimed at Iranian maritime trade while keeping passage open for ships bound for other Gulf states. (thedefensenews.com, centcom.mil) Iran has rejected the idea that it can be sealed off and has signaled it could answer with its own pressure on Gulf shipping. Iranian state-linked outlets have also tried to show tankers still moving through the area, even as outside reporting described traffic jams and stranded cargoes. (msn.com, msn.com) Analysts told CNBC that more than 90 percent of Iran’s seaborne trade moves through the Strait of Hormuz, which helps explain why Washington chose maritime pressure instead of a formal closure of the Gulf. That leaves the United States trying to squeeze Iran’s port traffic without openly shutting the artery used by its Arab neighbors. (cnbc.com) For now, the practical effect is simple: American warships are policing access to Iranian ports at the mouth of the Gulf, and commercial captains are already turning away. What happens next depends on whether Tehran tests that line or looks for a diplomatic exit. (navytimes.com, cbsnews.com)