WSJ What’s News
WSJ What’s News

With All Eyes on Iran, North Korea Nuked Up

April 20, 2026

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5 min read

With All Eyes on Iran, North Korea Nuked Up

The Strait of Hormuz remains closed despite weekend hopes for a reopening, and President Trump called Iran's position "a total violation of the ceasefire agreement" in a series of social media posts Sunday, threatening to "knock out all of Iran's British" — a line that left markets uncertain as a three-week stock rally brought U.S. indexes to record highs. Meanwhile, with global attention fixed on the Iran conflict, North Korea has quietly accelerated its nuclear program to a point where international mechanisms to stop it have effectively been eliminated.

Iran Talks Stall as Strait Stays Closed

The U.S. and Iran left their last round of talks "very far apart on key issues," according to the reporting, particularly around Iran's future uranium enrichment — a sticking point from the beginning. The U.S. is now pushing for three demands: that Iran reopen the Strait of Hormuz for commercial shipping, freeze enrichment of uranium for at least 20 years, and agree to remove its stockpiles of enriched uranium. Iranian state media has called these demands "excessive" and considers Washington's blockade of the strait an act of war.

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What you'll learn

  • 1 With All Eyes on Iran, North Korea Nuked Up
  • 2 WSJ What’s News — April 20th
  • 3 (01:16) **Iran War Uncertainty Returns After Ceasefire Hopes** - A three-week rally hits a wall as Iran reneges on reopening the Strait of Hormuz and Trump threatens to destroy its boats
  • 4 (02:40) **U.S. Seizes Iranian Ship Attempting to Run Blockade** - An American destroyer intercepted an Iranian vessel trying to reach Chinese ports after ignoring demands to stop
  • 5 (03:14) **UAE Asks U.S. for Financial Lifeline as Iran War Strains Economy** - Exclusive: Emirati officials have floated a currency swap line with the Fed, arguing Trump's war could force them to sell oil in yuan
  • 6 (04:04) **North Korea Accelerates Nuclear Program While World Watches Iran** - Korea Bureau Chief Tim Martin reports Kim Jong Un is "exploding the moment" as new facilities near completion and missile tests continue
  • 7 (05:55) **Japan Exports Warships for First Time Ever** - Mitsubishi Heavy Industries finalizes a $7 billion deal to supply frigates to the Royal Australian Navy

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Guests on this episode

Show Notes

A.M. Edition for April 20. Oil prices are surging and stock markets are slipping, as Iran again blocks the Strait of Hormuz and President Trump threatens fresh strikes on key infrastructure. With just days left of the ceasefire, will the U.S. and Iran agree to peace talks this week? Plus, with the world’s focus elsewhere, WSJ’s Tim Martin says North Korea has sped up work on its nuclear program. And scientists close in on treatments to stop the genetic driver of the world’s deadliest cancer. Luke Vargas hosts.


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