Are we sleepwalking into a third world war?

Summary of Are we sleepwalking into a third world war?

by Financial Times

34m•October 22, 2026

Overview of The Rackman Review

This episode of the Financial Times’s Rackman Review is a wide-ranging conversation between Gideon Rachman and Alec Russell about whether the world is drifting toward a third world war. Using Rachman’s new book as a starting point, they examine the breakdown of the post–Cold War international order, the war in Ukraine, the Middle East conflict, and rising U.S.-China tensions over Taiwan. The core argument is not that a world war is inevitable, but that multiple regional conflicts are becoming more interconnected, while deterrence and alliance commitments are looking increasingly unstable.

Main Themes and Arguments

Why “World War III” is being discussed so often

  • Rachman argues that references to a third world war are no longer fringe or sensationalist.
  • Political leaders across the spectrum now invoke it regularly:
    • Donald Trump used it as a campaign theme.
    • Volodymyr Zelensky warns that failure to stop Russia could lead to a wider war.
    • NATO’s leadership and even Xi Jinping talk in ways that reflect a more dangerous world.
  • The phrase is often used loosely, but it reflects real anxiety about escalation and overlap between theaters of conflict.

What would actually count as a world war?

Rachman suggests two defining features:

  1. Direct fighting between major powers
    • Similar to the dynamics of World War I and II.
  2. Multiple regions merging into one wider conflict
    • For example, Ukraine, the Middle East, and the Indo-Pacific becoming linked through alliances, interventions, or spillover.

Why deterrence may be weakening

  • The episode stresses that deterrence only works if adversaries believe threats and commitments are credible.
  • Trump’s rhetoric has created doubt about whether the U.S. would reliably defend allies such as NATO members, Japan, South Korea, or Taiwan.
  • Once opponents suspect a guarantee may not be enforced, the risk of miscalculation rises sharply.

The Key Conflicts Discussed

Ukraine and Russia

  • The podcast begins with the atmosphere at the Munich Security Conference in February 2022, just before Russia’s invasion.
  • Western intelligence services were unusually public about their warnings that Putin had already decided to invade.
  • Rachman recalls how surreal it was: Zelensky, Western leaders, intelligence chiefs, and even Russians were all in the same hotel while war loomed.
  • The episode revisits late 2022, when the Biden administration feared Russia might use a tactical nuclear weapon after battlefield setbacks.
  • U.S. officials were deeply worried about escalation, and according to Rachman, there were private warnings to Moscow about the consequences of using nuclear weapons.

The Middle East

  • The conversation turns to Gaza, Israel, Lebanon, Iran, and the broader regional fallout.
  • Rachman argues that the Biden administration tried, but often failed, to restrain Israel from expanding the conflict.
  • U.S. officials worried about:
    • mass civilian casualties in Gaza,
    • escalation into Lebanon,
    • a direct strike on Iran,
    • and the domestic political consequences of backing Israel too strongly.
  • The episode suggests that Washington was repeatedly outmaneuvered by Israeli leadership and that American policy here may be judged harshly in retrospect.

China and Taiwan

  • Taiwan is presented as the most consequential potential flashpoint for the global economy.
  • Rachman says Beijing is clearly preparing military options through drills, pressure tactics, and military buildup.
  • He notes that Xi Jinping’s ultimate decision-making is highly centralized, much like Putin’s and Trump’s.
  • The tension is sharpened by uncertainty over U.S. policy:
    • Biden sounded more explicit about defending Taiwan.
    • Trump has drifted back toward strategic ambiguity, or even skepticism about defending it.
  • Rachman warns that ambiguity can be dangerous: it may deter less, not more.

Historical Lessons and Strategic Ideas

Spheres of influence

  • Rachman says Trump appears drawn to a “spheres of influence” model:
    • the U.S. dominates the Western Hemisphere,
    • Russia dominates its neighborhood,
    • China dominates East Asia.
  • He argues this sounds tidy in theory but breaks down in practice because:
    • borders of influence are vague,
    • smaller states resist domination,
    • and vital interests, such as Taiwan’s semiconductor production, make compromise difficult.

Historical analogies

  • The episode repeatedly returns to 1914 and 1939.
  • The lesson is that wars often begin when leaders believe deterrence guarantees are bluff or outdated.
  • Rachman warns that modern leaders may be making similarly dangerous assumptions about whether rivals will really enforce their red lines.

Notable Insights

  • On world war talk: leaders often use the phrase without defining it, but the overlap of conflicts is what makes it dangerous.
  • On Biden officials: Rachman is sympathetic to their caution, arguing they were “learning by doing” in an unprecedented situation.
  • On Trump: he is portrayed as having shifted from self-styled peacemaker to someone whose actions have often escalated tensions rather than reduced them.
  • On Zelensky: Rachman describes him as increasingly frustrated with Western equivocation and more willing to speak bluntly about what he sees as betrayal or delay.
  • On deterrence: the greatest danger is not necessarily a planned global war, but a chain of misjudgments by leaders who assume others will back down.

Bottom Line

The episode’s central message is that the world is not necessarily heading into a single, deliberate “world war,” but it may already be entering a more dangerous era in which major conflicts reinforce one another. Ukraine, Gaza/Iran, and Taiwan are not the same war, but they could become connected through escalation, alliance commitments, and failed deterrence. Rachman’s warning is that the old order is fraying faster than leaders have a plan to replace it.