US Marines train on USS Tripoli in Arabian Sea

The U.S. military continues to enforce President Donald Trump's naval blockade of Iran, with the forward-deployed amphibious assault ship USS Tripoli (LHA-7) operating in the Arabian Sea. On April 11, 2026, U.S. Marines with the 31st Marine Expeditionary Unit's Maritime Raid Force conducted routine training aboard the vessel. The 31st MEU is deployed to the region to support maritime security and stability operations. The training highlights the sustained presence of U.S. naval and amphibious forces in the area as part of the blockade enforcement.