On April 13, 2026, the US Navy began the first full naval blockade of Iran. Twenty-four hours later, a sanctioned Chinese tanker called the Rich Starry sailed straight through the Strait of Hormuz and reversed back through the next day. Iran's foreign ministry confirmed vessels flagged to China, Russia, India, Iraq, and Pakistan would all be allowed through. The US did not interdict any of them. This episode is what the blockade actually was: a sanctions cordon backed by carrier strike groups, calibrated around what Beijing would tolerate. It covers the math that actually closed the strait — war-risk insurance from a few hundred thousand dollars per voyage in February to $14 million by mid-March, forty times the cost. The nuclear clock — 440 kilograms of 60% enriched uranium buried under bombed sites the IAEA hasn't seen since February 28. The day America's coalition cracked — China calling the blockade "dangerous and irresponsible" in the same 24 hours Saudi Arabia leaked to WSJ that it wanted the blockade lifted. China's three quieter moves: a UN Security Council veto, a CNN intel report on MANPAD shipments through third countries, and the Trump-Xi summit in early May. Mojtaba Khamenei, Iran's new Supreme Leader, and what the Shia rule of "the dead scholar" means for his father's oral fatwa against nuclear weapons. And it covers what happened in the eight days after the blockade. Iran's foreign minister declared the strait "completely open" on April 17 — oil dropped 10%. The next day, the Revolutionary Guard fired on a French container ship and two Indian-flagged vessels. On Sunday a US destroyer blew a hole in the engine room of an Iranian cargo ship called the Touska, and US Marines rappelled aboard. On April 21, Trump extended the ceasefire — citing Iran's "seriously fractured" government as the reason. By April 23, Iran was laying mines, and Trump had ordered the US Navy to shoot and kill any boat laying them. Thirty-eight years and nine days after the USS Samuel B. Roberts struck an Iranian mine in those same waters, the parallel was complete. Math closes straits in 2026. Politics decides when they reopen. The Revolutionary Guard decides when they close again. Seven predictions. CHAPTERS 00:00 Cold open — The Rich Starry 01:17 Intro + preview 02:01 Chronology 03:47 What "blockade" actually means 05:13 Rich Starry, in detail 06:02 Money — Brent, insurance, SPR, shadow fleet 09:10 Nuclear clock — 440 kg, facility damage 12:52 Mojtaba Khamenei + the dead scholar's fatwa 14:46 Apr 17-18 — the factional split 17:40 Apr 14 — coalition fracture 18:28 China's quieter moves 20:23 Five US endgame options + cascade 23:01 Cuba 1962 + 1988 parallels 24:25 Apr 17-21 — weekend whiplash 25:30 Apr 19 — Spruance + Marines seize the Touska 26:39 Apr 21 — Trump "seriously fractured" + ceasefire extended 27:59 Apr 22-23 — Iran kinetic + mines + "shoot and kill" 29:49 Seven predictions 31:44 Closing thesis 34:25 1988 → 2026 anniversary callback SOURCES Apr 11 — CNN + The Hill, China MANPAD shipments via third countries Apr 13 — Military.com, Trump 50% tariff threat + early-May Xi summit Apr 12-15 — Al Jazeera, Trump blockade announcement + Cooper "completely halted" + Rich Starry transit Apr 14 — CNBC, China FM "dangerous and irresponsible"; WSJ via Antiwar, Saudi pressure on US Apr 18 — Fortune, Iran's Hormuz whiplash + Golkar "factions" quote + ISW + Brew Apr 18 — AOL/AP, Iran restores "strict management" + Tasnim/Fars criticism of Araghchi Apr 19 — JPost, US Marines rappel onto Touska after 6-hour standoff Apr 20 — NYT, Hormuz traffic at standstill + Kpler data Apr 21 — NBC live blog, Trump extends ceasefire + Iran UN complaint Apr 23 — Al Jazeera + NBC, Trump "shoot and kill" + Iran mine-laying Apr 24 — NYT, both Iran and US blockade Strait of Hormuz Background: CSIS Operation Epic Fury cost; IAEA GOV/2026/8; ISIS / Albright (Nov 2025); Washington Institute on Mojtaba (Clawson + Nadimi, Mar 2026); Lawfare on Hormuz maritime law