U.S. Central Command said its forces have redirected 100 commercial vessels under a six-week-old maritime blockade of Iran, a benchmark the command framed as proof the operation has choked off seaborne trade with the Islamic Republic even as a fragile ceasefire holds and talks to end the war remain unresolved.

The blockade began on April 13 under a presidential proclamation and targets commercial ships entering or exiting Iranian ports.

Centcom said more than 15,000 troops have redirected 100 vessels, disabled four, and allowed 26 humanitarian shipments to pass.

More than 200 U.S. aircraft and warships are involved, including the Abraham Lincoln and George H.W. Bush Carrier Strike Groups and the Tripoli Amphibious Ready Group with the 31st Marine Expeditionary Unit.

“Our service members are doing extraordinary work,” Adm. Brad Cooper, the Centcom commander, said in the announcement.

“They have been highly effective by executing the mission with precision and professionalism, allowing zero trade into and out of Iranian ports, which has squeezed Iran economically,” Centcom said.

Enforcement extends to all Iranian ports on the Arabian Gulf and the Gulf of Oman.

The Strait of Hormuz, which typically carries about a fifth of the global oil supply, has been the pressure point for the operation since Iran began restricting traffic and floated plans to charge transit tolls.

The closure has rippled through global energy markets, pushing U.S. gas prices to four-year highs heading into the Memorial Day weekend.

Diplomacy has inched forward without producing a deal.

Secretary of State Marco Rubio, speaking Thursday at a NATO foreign ministers meeting in Helsingborg, Sweden, said any agreement would be “unfeasible” if Tehran insists on tolling ships through Hormuz.

Rubio also reiterated President Trump’s three demands: no Iranian nuclear weapons, no tolls in the strait, and the surrender of Iran’s enriched uranium stockpile.

Meanwhile, Iran submitted its latest counterproposal this week, Reuters reported, and Iranian officials told the semiofficial ISNA news service that the U.S. response had “narrowed the gaps to some extent.”

Tehran has resisted surrendering its enriched uranium and continues to assert authority over Hormuz traffic, leaving the two largest sticking points unresolved.

Trump has held off on new strikes at the urging of Gulf allies and paused Project Freedom, a Pentagon initiative that had briefly attempted to escort stranded vessels out of the strait, though officials have signaled he is weighing a resumption.

The blockade itself remains in place.

The Defense Department in early May estimated the blockade had cost Iran roughly $4.8 billion in lost oil revenue, The Hill reported.