WASHINGTON — Two Iranian tankers reversed course in the Strait of Hormuz late Friday, turning back toward Bandar Abbas just hours after Pakistan's ceasefire announcement collapsed in Islamabad.

The vessels — identified as the Delvar and Golshan — had been heading toward international waters when their captains received new orders. Ship tracking data shows both tankers executed emergency turns at 11:47 PM local time.

Twenty-three minutes after Secretary of State Marco Rubio walked out of the Pakistan Foreign Ministry building.

Intelligence drove the reversals

Washington noticed. "The Iranians pulled their ships back because they knew what was coming," said Michael Pregent, former Defense Intelligence Agency Iran analyst. "You don't reverse two fully loaded tankers unless someone with stars on their shoulders is making calls."

The tanker movements suggest Iran's Revolutionary Guard Navy received intelligence about potential U.S. military action before Pakistan's mediation effort officially ended. Both vessels carry roughly 2 million barrels of crude — worth $190 million at current prices.

Maritime insurance rates for Hormuz transit jumped 340% in the two hours after the tankers turned around. Not confirmed yet.

But the shipping data doesn't show everything. Iran moved three additional tankers to Bandar Abbas anchorage during the same window. Those ships had been sitting in Iranian territorial waters for six days.

Uranium shipments killed the deal

Pakistani Foreign Minister Bilawal Bhutto-Zardari spent 14 hours shuttling between American and Iranian delegations housed in separate wings of the Serena Hotel. No breakthrough.

"Iran wanted sanctions relief before any nuclear concessions," said a senior Pakistani official who requested anonymity. "The Americans wanted uranium shipments to Russia stopped immediately. Neither side moved."

The Iranian delegation included Deputy Foreign Minister Ali Bagheri Kani and two Revolutionary Guard generals. Trump sent Rubio with explicit instructions: no uranium to Moscow, or talks end.

Iran has shipped an estimated 300 kilograms of 20% enriched uranium to Russia since January, according to International Atomic Energy Agency reports. That material can be further enriched to weapons-grade in weeks.

Rubio's walkout came after Iran's lead negotiator said uranium shipments to Russia were "a sovereign decision not subject to American approval."

Captains don't reverse without reason

The Delvar's captain, Hamid Rezaei, has navigated Hormuz for 12 years. He has never executed an emergency turn in international waters.

"When you reverse a fully loaded VLCC at night, you're responding to immediate threat intelligence," said Lloyd's of London maritime analyst Sarah Chen. "These weren't commercial decisions."

The Golshan's transponder went dark for 47 minutes during its turn. Electronic warfare jamming — likely from U.S. Navy ships positioned 40 miles southeast.

Three American destroyers have maintained positions in the strait since Tuesday. The USS Carney reported "routine patrol operations" at the time of the tanker reversals.

Iran's Tasnim News Agency reported the tankers returned to port "for routine maintenance." But Bandar Abbas port authority logs show both vessels were refueled and provisioned. Standard preparation for extended operations.

Submarines complicate the picture

Pentagon officials are tracking Iranian submarine movements near Qeshm Island. Two Kilo-class submarines departed their base Thursday night and haven't surfaced.

"Iran's naval doctrine calls for submarine deployment when tanker operations are threatened," said retired Admiral James Foggo, former U.S. Naval Forces Europe commander. "They're positioning for harassment operations."

Washington noticed. The submarine movements coincide with increased chatter on Iranian military frequencies monitored by U.S. signals intelligence. Defense officials describe the communications as "operational planning" rather than routine coordination.

Iran's Navy Commander Rear Admiral Shahram Irani issued a statement Friday evening warning that "any interference with Iranian commercial vessels will be met with decisive response."

Still unclear. That language mirrors statements Iran made before mining tankers in 1987.

Pakistan pays the diplomatic price

Pakistan invested significant diplomatic capital in the mediation attempt. Prime Minister Shehbaz Sharif personally guaranteed both delegations' security and met separately with Rubio and Bagheri Kani.

"This was Pakistan's moment to prove it could broker major power disputes," said Islamabad-based analyst Mosharraf Zaidi. "The failure damages Pakistan's credibility as a neutral mediator."

Trump tweeted at 6:23 AM Saturday: "Iran chose Russia over peace. Wrong choice. Very expensive choice."

Iranian Supreme Leader Ali Khamenei has not commented publicly since the talks collapsed. But his office issued a statement calling American demands "unrealistic and insulting to Iranian sovereignty."

The next scheduled diplomatic contact between Washington and Tehran is an International Atomic Energy Agency board meeting in Vienna on April 28. IAEA Director General Rafael Grossi will present updated assessments of Iran's nuclear program.

Still unclear. Both reversed tankers remain anchored at Bandar Abbas. Their crews are still aboard.