Japan Scraps Postwar Arms Export Ban in Historic Shift Away From Pacifist Constitution

Japan's cabinet approved the most sweeping overhaul of the country's arms export rules since the end of World War II on Tuesday, lifting a decades-old ban on selling lethal weapons systems to foreign nations and marking a historic departure from the pacifist foreign policy principles that have defined Japanese security policy since 1967.

Prime Minister Sanae Takaichi's government announced the change in Tokyo, removing five export categories that had previously limited Japanese defense exports to rescue equipment, transport vehicles, warning systems, surveillance technology, and minesweeping gear. Japan will now be permitted to sell full lethal systems — including warships, tanks, combat aircraft, missiles, and armed drones — to approved partner nations subject to a rigorous case-by-case review process.

Japan's arms export restrictions trace their origins to 1967, when Prime Minister Eisaku Sato first articulated a policy of avoiding weapons sales to communist states, countries involved in armed conflicts, and nations subject to United Nations embargoes. Those principles were formalized into comprehensive bans in 1976 and refined over subsequent decades. The restrictions were rooted in the spirit of Article 9 of Japan's postwar constitution, which renounces war as a sovereign right and prohibits the maintenance of war potential. For nearly 60 years, those constraints kept Japan largely outside the global arms trade, limiting its defense industry to a captive domestic market.

Under the new framework, defense equipment is divided into two categories: lethal "weapons" — including warships, tanks, missiles, and fighter jets — and nonlethal "nonweapons," such as radar systems, communications equipment, and protective gear. Sales of lethal weapons will require approval from Japan's National Security Council, a senior body that includes the prime minister and key cabinet ministers, ensuring political oversight of individual transactions.

The policy includes several significant safeguards designed to address domestic and international concerns about weaponizing Japan's industrial capacity. All proposed sales will undergo strict screening before approval. Recipients will be prohibited from re-exporting weapons to third parties without explicit Japanese permission. Sales to countries engaged in active armed conflict will remain prohibited as a general rule, and recipient nations must commit to using the equipment in accordance with the United Nations Charter.

At least 17 countries qualify as eligible buyers under the new rules. Japan has already signed a $7 billion contract to build warships for Australia — a deal that will now be explicitly governed by the revised export framework. Defense industry groups in Tokyo hailed the decision as a critical step toward building a globally competitive Japanese arms sector, which has historically been constrained to domestic production — limiting the economies of scale needed to reduce unit costs and maintain technological competitiveness against Chinese and Western competitors.

Beijing responded sharply. China's Foreign Ministry spokesman pledged vigilance against what he characterized as Japan's "reckless new-style militarisation," warning that the arms export overhaul risked destabilizing regional security in East Asia. The statement reflected Beijing's longstanding concern that a more capable and export-oriented Japanese defense industry would strengthen the U.S.-Japan alliance at China's expense.

Takaichi has been among Japan's most assertive advocates for defense buildup. Since taking office, she has pushed Japan to double its defense spending to 2% of gross domestic product — a target NATO member states share — and the arms export liberalization is designed in part to strengthen Japan's domestic defense industry by opening international markets. The move also carries significant implications for the U.S.-Japan alliance. Washington has long supported a more capable Japanese military as a counterbalance to Chinese military expansion in the Pacific.

The relaxed export rules will enable Japan to participate more fully in joint weapons development programs with its allies, including the trilateral UK-Italy-Japan Global Combat Air Programme developing a sixth-generation fighter jet intended to enter service in the mid-2030s. Domestically, opposition parties argued the government was dismantling the postwar peace framework without adequate public debate. Ruling coalition allies, particularly the traditionally cautious Komeito party, signaled acceptance of the changes after receiving assurances about the safeguards and oversight mechanisms.

Defense analysts noted that Japan's decision reflects a broader shift across Asia-Pacific democracies toward more robust defense postures in response to China's military buildup and North Korea's nuclear provocations — a trend accelerated by the lessons of Russia's invasion of Ukraine and the ongoing U.S.-Iran conflict.