Japan Rearms + Guns Vs. Butter + Global Defense Spending Boom | The Spillover

Council on Foreign Relations (CFR)
Council on Foreign Relations (CFR)May 27, 2026

Why It Matters

Escalating defense spending strains public finances and fuels political backlash, reshaping fiscal policy and market dynamics worldwide.

Key Takeaways

  • Global defense budgets rose 2.9% real, but 10% without US Ukraine aid.
  • Europe’s defense spending surged double‑digits; Germany up 24%, Canada 20%.
  • Two‑thirds of defense growth financed by borrowing, raising debt and inflation.
  • Japan targets 2% GDP defense spend by 2025, up from 1%.
  • Rising militarization pressures fiscal stability, prompting political backlash over taxes and cuts.

Summary

The episode examines the accelerating global rearmament trend, framing it as a classic "guns versus butter" dilemma. Hosts Rebecca Patterson and Sebastian Malaby cite SIPRI data showing a 2.9% real increase in worldwide defense budgets last year, which would have been a 10% jump without the cessation of U.S. support to Ukraine. Europe leads the surge, with Germany’s spending up 24% and Canada’s over 20%, while two‑thirds of the growth is funded by borrowing, inflating debt and interest‑rate pressures.

The discussion links defense outlays to broader fiscal constraints. The IMF projects global sovereign debt to reach 100% of GDP by decade’s end, and J.P. Morgan warns that rising deficits could lift Treasury yields by nearly a full percentage point. In the United States, proposed defense spending of $1.5 trillion dwarfs the $1 trillion AI capital‑expenditure forecast, underscoring the scale of the fiscal challenge. The hosts also note that higher defense budgets often come at the expense of green energy, housing, and health programs, fueling political friction.

Japan serves as a case study. Prime Minister Takeuchi, elected on a platform of voter frustration over inflation and rice prices, has accelerated the Self‑Defense Forces budget to 2% of GDP by 2025—double the level maintained since the 1970s. This shift reflects a broader move away from the post‑World‑War II pacifist Article 9 stance, driven by China’s regional assertiveness and perceived uncertainty in U.S. security commitments. The hosts recount historical debates over Japan’s military role, from the Gulf War to recent diplomatic tensions with Beijing.

The implications are profound: sustained defense spending growth threatens fiscal stability, pushes up borrowing costs, and may trigger voter backlash against tax hikes or social‑program cuts. Markets will watch how governments balance security needs with economic health, while private‑sector partners could find opportunities in defense‑related technologies, including AI. The trajectory suggests that "guns versus butter" will dominate policy debates for years to come.

Original Description

As governments around the world ramp up defense spending, a new era of rearmament is reshaping economies, markets, inflation, and politics. This episode examines Japan’s dramatic shift away from its postwar pacifist identity amid rising tensions with China, ongoing conflicts in the Middle East, and growing uncertainty around the global security role of the U.S.
Hosts:
Sebastian Mallaby, Paul A. Volcker Senior Fellow for International Economics, Council on Foreign Relations (CFR)
Rebecca Patterson, Senior Fellow, Council on Foreign Relations (CFR)
We discuss:
1. Why the global rearmament boom could become the biggest fiscal stimulus story since the pandemic.
2. How defense spending is colliding with already massive government debt, and pushing bond yields higher.
3. Why Japan’s military transformation marks a significant reversal of its postwar identity.
4. Why Japan’s debate over nuclear weapons remains emotionally raw more than eighty years after Nagasaki.
5. How fear of China and doubts about the U.S. security umbrella are reshaping politics in Japan and Germany.
6. How governments are trying to fund massive military buildups without cutting popular programs, and why bond markets may eventually force a reckoning.
7. How rising military spending could fuel another wave of inflation, higher interest rates, and global market volatility, trapping central banks between fighting inflation and financing governments at war.
8. As Rebecca Patterson puts it: “All this is happening when governments, frankly, can't afford more guns or butter because debt levels are very high.”
9. How AI, drones, and cyberwarfare are rapidly changing the economics and strategy of modern conflict.
10. How the new arms race is spilling far beyond the battlefield into tech, energy, supply chains, and the future of globalization.
00:00 - Introduction to The Spillover
03:03 - Today’s Topics: Geopolitics, AI, & Remilitarization
04:45 - Global Defense Budget Trends & SIPRI Report
06:03 - Financing Deficits: Debt vs. Monetary Policy
07:04 - NATO Defense Spending & Trillion Dollar Budgets
08:22 - Comparison: Military Spending vs. AI Capex
10:28 - Japan Case Study: Defense Hawks & Inflation
12:02 - History of Pacifism: Article 9 & Self-Defense
15:13 - Geopolitics: Japan-China Tensions & Rearmament
18:01 - Three Non-Nuclear Principles & Deterrence
25:50 - Political Hurdles: Referendums & Public Opinion
29:54 - Macroeconomic Spillovers: Guns vs. Butter
34:41 - Central Banks: Interest Rates & Yield Curves
41:40 - Closing: Global Supply Chains & Papal Views on AI
Mentioned on the Episode:
“Fiscal Policy under Pressure: High Debt, Rising Risks,” International Monetary Fund (IMF) https://www.imf.org/en/publications/fm/issues/2026/04/15/fiscal-monitor-april-2026
“Global Supply Chain Pressure Index (GSCPI),” Federal Reserve Bank of New York https://www.newyorkfed.org/research/policy/gscpi#/interactive
“The True Cost of Peace: Rebalancing World Military Spending For a Sustainable and Peaceful Future,” United Nations https://www.un.org/en/peace-and-security/the-true-cost-of-peace
“World Economic Outlook: Defense Spending,” International Monetary Fund (IMF) https://www.imf.org/-/media/files/publications/weo/2026/april/english/ch2.pdf
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The Spillover is a production of the Council on Foreign Relations. The opinions expressed on the show are solely those of the hosts and guests, not of the Council, which takes no institutional positions on matters of policy.

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