Russia Detains Japanese Reporter on Espionage Charges as Bilateral Ties Remain Strained

Russia has detained a Japanese reporter on Sakhalin Island on espionage charges, accusing him of collecting information about the country's defense capabilities. The case has further heightened tensions in a bilateral relationship already at a low ebb over disagreements on the Ukraine conflict and a long-running territorial dispute.

According to Russian news agencies, Imai Yuki, a reporter for the Hokkaido Shimbun newspaper, was detained by Russia's Federal Security Service (FSB) as he was preparing to leave the following day. TASS, citing FSB sources, reported that Yuki was detained in the Sakhalin region and taken to Moscow after being charged in a "criminal case." Interfax reported that the journalist will be held in pretrial detention until December 12, when his trial is set to begin.

How the detention unfolded

Russian Foreign Ministry spokeswoman Maria Zakharova accused Yuki of espionage at a press briefing on Tuesday. She said it was "regrettable" that Tokyo uses resident correspondents in Russia to "collect information aimed at weakening" the country's security, adding that the case was "not an isolated incident."

Zakharova also criticized the Japanese government's "anti-Russia" policy since World War II, as well as Tokyo's refusal to heed Moscow's concerns about Japan's rearmament policy, saying this affected Russia's legitimate security interests in the Far East. She called on Tokyo to "sober up and change its approach, abandoning hostile steps toward Russia."

Reaction from Japan

On Wednesday morning, Japanese Foreign Minister Toshimitsu Motegi said Tokyo has asked Russia to "provide timely information" about the detention, and called for consideration of humanitarian factors and fair, objective treatment.

Japanese media reported that the Foreign Ministry is expected to summon Russian Ambassador Nikolay Nozdrev to protest, though there was no official confirmation. The Hokkaido Shimbun, Yuki's employer, said it is verifying the information and that "the reporter's safety is our top priority."

A territorial dispute spanning more than a century

Russia currently administers the Kuril Islands, while Japan claims sovereignty over four southern islands — Iturup, Kunashir, Shikotan and the smaller Habomai islets — which it calls the "Northern Territories." The Kuril chain lies between Japan's Hokkaido and Russia's Kamchatka Peninsula.

The dispute dates back to 1855, when Russia and Japan signed their first diplomatic and trade treaty, demarcating the border in the Kuril Islands with Iturup under Japanese control and the northern islands under Russia. After Japan's surrender in the final weeks of World War II, Moscow took control of the entire chain and deported about 17,000 Japanese citizens.

Under the 1951 San Francisco peace treaty, Japan renounced the Kuril Islands but still asserts that the four southern islands are its territory. Russia did not sign the treaty. Because of the long-running dispute, the two countries have never signed a formal peace treaty to end World War II.

Tensions have risen in recent years

In August, Russian President Vladimir Putin made his first visit to Iturup, becoming the second Russian president to visit the disputed islands after his predecessor Dmitry Medvedev. The visit drew a strong reaction from Japan.

Japanese Prime Minister Sanae Takaichi called the visit "absolutely unacceptable," saying it "worsens the feelings of the Japanese people toward Russia," and insisted the islands are "Japan's unique territory historically and under international law." Foreign Minister Motegi also said the islands "have always belonged to Japan" and that the Japanese government "strongly opposes this visit."

Russia-Japan relations at a low point

Relations between the two neighbors are at their lowest level. Russia has stepped up its military presence on the Kuril Islands over the past decade, using Iturup as a key air base in the region. Moscow has also placed Japan on its list of "unfriendly" countries over sanctions related to the war in Ukraine.

On the Japanese side, Prime Minister Takaichi's cabinet last week approved additional sanctions against Russia, including expanded export bans and asset freezes on individuals linked to the Russian military. The detention of reporter Imai Yuki is seen as the latest development to worsen already tense ties between the two countries.