US Allies Eye Japan’s Biggest Arms Opening Since World War Two | 2026 Update

US allies eye Japan’s biggest arms opening since World War Two. And it’s happening faster than most expected.

Just this week, Prime Minister Sanae Takaichi‘s ruling party gave the green light to major changes in Japan’s long-standing arms export rules. Her government is set to formally adopt them as soon as this month.

Why Japan Is Opening Its Arms Exports for the First Time Since WWII

For the first time since the end of World War Two, Tokyo is poised to let lethal weapons flow more freely to trusted partners, moving beyond the old limits that confined sales mostly to rescue gear, surveillance drones, and mine-clearing equipment.

It’s not some abstract policy tweak. Real money and real security needs are driving it. Japan already spends about $60 billion on its military this year. That steady spending has quietly built a defence industry capable of turning out advanced submarines, fighter jets, and missile systems.

Trump’s Stance and Global Conflicts Push Allies Toward Japan

President Donald Trump’s mixed signals on NATO commitments, plus the heavy strain on U.S. weapons stocks from conflicts in Ukraine and the Middle East, have allies hunting for alternatives.

European diplomats in Tokyo told Reuters they see Japan’s move as a chance to ease their heavy reliance on American supplies. U.S. gear made up 95 percent of Japan’s own defence imports between 2021 and 2025, according to the Stockholm International Peace Research Institute (SIPRI). Similar numbers show up for Australia, Britain, and others.

First Big Deals: Philippines and Poland Lead the Charge

Philippines to Receive Japanese Frigates and Missile Systems

Over in Southeast Asia, the Philippines is also in the mix. Locked in tense maritime standoffs in the South China Sea, Manila could soon receive used Japanese frigates, one of the first likely deals under the new rules. Missile defence systems might follow. Two Japanese officials confirmed the timeframe to Reuters, marking a concrete step toward deeper naval ties.

Poland Hunts for Anti-Drone and Electronic Warfare Tech

Poland stands out as one eager partner. Its deputy chief of mission in Japan, Mariusz Boguszewski, put it plainly: Japanese cooperation could help plug gaps in anti-drone and electronic warfare systems. Polish firm WB Group already has a tentative drone deal with Japanese aircraft maker ShinMaywa. Warsaw and Tokyo see real potential to swap strengths, each filling what the other lacks.

Japanese Defence Giants Ramp Up Hiring and Exports

Japanese defence executives aren’t waiting around. Toshiba plans to hire roughly 500 people over the next three years and is building new testing and manufacturing facilities. They’ve even created a dedicated exports department.

“Reputational risk is not what it used to be,” said Toshiba’s Kenji Kobayashi. Mitsubishi Electric is expanding its defense unit too, hiring for overseas sales roles that cover everything from fighter aircraft to missiles. The company projects its defense sales, domestic and international, will jump 50 percent to 600 billion yen (about $3.8 billion) by 2031.

How Japan’s Defense Industry Has Grown Stronger

The late Prime Minister Shinzo Abe began easing the near-total ban more than a decade ago to allow joint development with allies. But big restrictions stuck around, especially on lethal gear, and many firms stayed cautious.

Takaichi, riding a strong election win and without the old coalition partner that blocked bolder moves, is now pushing harder. Her goal: bulk up Japan’s own production base while giving allies better options.

Even Ukraine is sensing an opportunity. Kyiv’s chamber of commerce in Tokyo is launching a new industry group pairing Ukrainian and Japanese drone makers, timed exactly with these rule changes.

Challenges and Pushback from Inside Japan

Of course, not every Japanese company is rushing in. Some big names with big consumer brands worry about backlash from arms sales. Toyota’s subsidiary turned down a Latvian request for military vehicle parts back in 2023, citing its own business policy.

But the overall mood among defense specialists is shifting. As one executive put it, the focus now is on delivering capability and growing the sector responsibly.

SIPRI’s latest data puts Japan’s defense industry right alongside South Korea, Germany, Italy, and Israel in scale — nearly twice the size of India’s. The five top Japanese firms saw combined arms revenues hit $13.3 billion in 2024, a whopping 40 percent jump from the year before. Mitsubishi Heavy Industries alone grew 37 percent to $5 billion, mostly from aircraft and missiles.

What This Historic Opening Means for Global Allies

For the broader Indo-Pacific and Europe, this opening feels like a pragmatic win. Allies gain reliable, high-quality alternatives without putting all eggs in one basket. Japan strengthens its own industrial base and deepens partnerships that counter shared concerns, whether that’s Chinese assertiveness in Asian waters or European worries about supply-chain fragility.

Beijing has already voiced caution, urging Tokyo to “act prudently” on military matters.

None of this means Japan is abandoning its postwar principles. Strict controls remain, no sales to active conflict zones except in rare cases, and exports will still need case-by-case approval, especially for lethal systems. The changes are designed to support allies and build resilient supply chains, not spark an arms race.

Still, the momentum is clear. Japanese firms are hiring, expanding, and eyeing markets from Asia to Europe and even co-development opportunities with the United States, Australia, and others.

In the end, this isn’t just about weapons or budgets. It’s about allies working together in a more balanced way, sharing technology, spreading risk, and keeping the peace through stronger, more diverse partnerships. Japan’s biggest arms opening since World War Two could prove to be one of the smarter moves in today’s uncertain times.