Japan is expected to raise fresh concerns over expanding Chinese military activity in the Pacific region in its upcoming annual defence white paper, according to reports by Kyodo News, signalling growing anxiety in Tokyo over regional security dynamics and Beijing’s increasing strategic reach.
The draft defence report is expected to warn that China is rapidly intensifying military operations and strategic activities not only around the East China Sea and Taiwan Strait but also deeper into the wider Pacific region, an area traditionally viewed as critical to Japan’s security architecture and maritime interests.
According to Japanese media reports, the defence paper is likely to describe China’s expanding military presence as an “unprecedented and greatest strategic challenge” for Japan and the broader international community. Officials are reportedly concerned about the frequency of Chinese naval deployments, long-range military exercises and increased activity near Pacific island nations.
The expected warning comes amid heightened geopolitical tensions across the Indo-Pacific region, where competition between China and the United States and its allies has intensified sharply over issues including Taiwan, maritime control, military influence and critical trade routes.
Japan has in recent years significantly increased defence spending and strengthened military cooperation with the United States, Australia, India and several European partners under broader Indo-Pacific security frameworks. Tokyo has also accelerated deployment of missile defence systems and military infrastructure across its southwestern islands close to Taiwan.
The upcoming defence paper is expected to highlight concerns over China’s growing naval capabilities, including aircraft carrier operations, submarine deployments and military exercises involving long-range bombers and warships operating beyond traditional zones. Japanese officials reportedly fear that China’s increasing presence in Pacific waters could alter the regional balance of power.
Security analysts note that Pacific island nations have become strategically important amid growing global competition for maritime influence, military access and supply-chain security. China has expanded diplomatic, economic and security engagement with several Pacific countries in recent years, prompting concerns among Japan and Western allies about Beijing’s long-term strategic intentions.
The report is also expected to address broader regional flashpoints, including tensions surrounding Taiwan Strait, North Korean missile activities and maritime disputes in the East China Sea. Japanese officials have repeatedly stated that peace and stability in the Taiwan Strait are directly linked to Japan’s national security.
The latest development comes as Japan continues implementing one of its biggest post-war military transformations. Under revised national security strategies announced in recent years, Tokyo has committed to significantly boosting defence capabilities, acquiring counter-strike systems and strengthening coordination with allies.
China, meanwhile, has consistently rejected accusations that its military activities threaten regional stability. Beijing maintains that its military expansion is defensive in nature and has criticised Japan’s defence buildup, accusing Tokyo of exaggerating the “China threat” narrative.
The defence white paper is expected to be closely watched by governments and strategic analysts across Asia and the Pacific as regional tensions continue rising amid increasingly complex geopolitical rivalries.