North Korea has condemned Japan's recently published annual Diplomatic Bluebook as a "grave provocation," accusing Tokyo of encroaching on its sovereign rights by criticising Pyongyang's nuclear and missile programmes. The statement, carried by the official Korean Central News Agency (KCNA), came from an official at North Korea's Institute for Japan Studies, a body affiliated with the country's foreign ministry.
Japan's foreign ministry releases a Diplomatic Bluebook each year, a policy document that lays out Tokyo's official positions on international affairs. Last week's edition described North Korea's continued nuclear and missile development as a "grave and urgent threat" and a "clear and serious challenge," and repeated Japan's call for "complete, verifiable and irreversible dismantlement" of Pyongyang's arsenal. The North Korean official rejected this framing outright, insisting that the country's weapons development "belongs to the right to self-defence" and is enshrined in North Korea's constitution. The Bluebook was described as "woven with conventional gangster-like logic and absurdity" and as a "tricky document" designed to advance what Pyongyang characterised as Japan's revived militarist ambitions.
The exchange underscores the deep hostility between the two neighbours, who have no formal diplomatic relations. Japan colonised the Korean peninsula from 1910 until the end of World War II in 1945, a history that continues to shape Pyongyang's rhetoric toward Tokyo. North Korea has consistently maintained that its nuclear status is irreversible and has repeatedly rebuffed international calls for disarmament.
The Bluebook also addressed other regional tensions. Tokyo expressed concern that North Korea had deployed troops and ammunition to Russia in support of its war against Ukraine — an allegation Pyongyang has denied. Separately, Japan downgraded its description of China for the first time in a decade, referring to Beijing as an "important neighbour" rather than "one of Japan's most important" partners, reflecting strained ties following Prime Minister Sanae Takaichi's suggestion in November that Japan could intervene militarily if China were to attack Taiwan, which Beijing claims as its own territory.
The episode highlights how Tokyo's single annual policy document has simultaneously inflamed relations with three of its most consequential neighbours, at a moment of heightened security uncertainty across the Indo-Pacific region.