Japan protests after Putin’s first visit to disputed Kuril Islands as torrential rain kills at least four in Chiba

Japan on Thursday lodged diplomatic protests after Russian President Vladimir Putin made his first visit to the Kuril Islands — a long-disputed chain Moscow administers but Tokyo still claims — while the country also faced deadly weather as record rainfall in Chiba prefecture killed at least four people and left thousands without power.

What happened: Putin’s visit and Japan’s response

Russian state media and multiple international outlets reported that President Vladimir Putin travelled to Iturup (known in Japan as Etorofu), one of the four southern Kuril islands claimed by Japan. Tokyo’s new prime minister, Sanae Takaichi, described the trip as “absolutely unacceptable,” saying it was “incompatible with Japan’s consistent position on the Northern Territories,” according to reporting from the BBC and The Washington Post.

Japan’s foreign minister, Toshimitsu Motegi, summoned Russia’s ambassador, Nikolay Nozdrev, to lodge a formal protest and said the islands are “inherently Japanese territory both historically and under international law,” the Associated Press reported via NPR. The Russian Embassy in Tokyo dismissed Tokyo’s protest as “unfounded,” saying the southern Kurils are an “integral part of the Russian Federation,” according to the AP account.

Putin’s visit included stops at local facilities on Iturup — a fish-processing plant, a hospital and a school — and interactions with residents and regional officials, reporters said. Moscow has administered the islands since the Soviet Union occupied them at the end of World War II; that unresolved territorial dispute has prevented the two countries from signing a formal post-war peace treaty, the AP and Washington Post noted.

Why the Kurils remain a diplomatic flashpoint

The four southernmost Kuril islands — known in Japan as the Northern Territories — were seized by the Soviet Union in the closing days of World War II and remain under Russian administration. Decades of negotiations have failed to produce a settlement, and the issue is the principal reason Moscow and Tokyo never concluded a peace treaty after the war, sources report.

Observers cited in the reporting note that Russia has strengthened its military presence on the islands over the past decade and regularly stages drills nearby. Japanese leaders have protested earlier visits by senior Russian officials to the islands, including trips by previous prime ministers and other high-level figures, indicating that the issue recurs as a diplomatic irritant.

Immediate diplomatic steps and official language

Tokyo’s summoning of the Russian ambassador and the formal protest message to Moscow were confirmed in reporting by NPR (AP). Prime Minister Takaichi said the trip worsened public sentiment toward Russia and that she hoped Moscow would “take the gravity of this matter very seriously,” the BBC recorded. Moscow, by contrast, framed Putin’s travel as a sovereign decision and defended the islands’ post‑war status in public statements carried by AP.

Parallel crisis: record rain and fatalities in Chiba

On the same day, heavy and record-breaking rainfall struck Chiba prefecture, east of Tokyo, causing floods, power outages and fatalities. Euronews reported at least four deaths in Chiba and widespread disruption: about 26,000 households were without electricity, 45 houses were flooded and hundreds of people sought shelter in evacuation centres or at Chiba station after train services were suspended.

The area around Narita Airport was particularly affected. Roughly 7,000 travellers were stranded overnight when rail services were halted and many spent the night in airport terminals, the Euronews video report said. Local authorities found several people dead in floodwaters, including a man discovered in high water and a 66‑year‑old woman who died after becoming trapped in her flooded vehicle.

Japan’s Meteorological Agency issued unusually severe warnings, with officials warning that rainfall could reach “unprecedented” levels in some areas; by Friday morning the agency had downgraded the highest alert level but cautioned that risks of additional flooding and landslides remained.

Context and implications

These developments come amid an already tense relationship between Tokyo and Moscow. Japan imposed sanctions on Russia after Moscow’s 2022 invasion of Ukraine, and the Kurils dispute has long limited bilateral cooperation. The visit is likely to further strain ties and complicate any near‑term diplomatic efforts to restart talks over the islands.

For Japan’s domestic politics, Prime Minister Takaichi’s strong language underscores how territorial issues resonate with public sentiment and nationalist concerns. Internationally, the visit may draw renewed attention from allied governments and regional partners monitoring Russia’s posture in the North Pacific, though reporting so far documents responses primarily confined to formal diplomatic protest and reciprocal statements.

Unresolved points and what to watch next

• Whether Tokyo will take further measures beyond a formal protest and ambassadorial summons, such as additional diplomatic steps or new restrictions; current reporting records only the protest and summoning.
• How Moscow frames follow-up statements and whether Russia will make further administrative or security moves on the islands; Russian officials told reporters the visit reflected established post‑war realities, per AP reporting.
• The humanitarian and transport impacts of Chiba’s flooding, including restoration of power and rail services and any official casualty updates from prefectural authorities; Euronews reported the initial toll and disruptions.

Timeline (based on reporting)

1. Putin visits Iturup/Et orofu — report date: 13 August 2026 (AP/NPR, BBC, Washington Post).
2. Tokyo summons Russian ambassador Nikolay Nozdrev and lodges formal protest — same day, as reported by NPR (AP) and the Washington Post.
3. Prime Minister Sanae Takaichi publicly condemns the visit as “absolutely unacceptable” — reported by BBC and the Washington Post.
4. Record rainfall hits Chiba prefecture, causing at least four deaths, power outages and travel disruption — reported 14 August 2026 by Euronews.

Practical implications for readers in the U.S.

American travellers planning trips to the Tokyo–Narita area should expect possible delays and cancellations in the short term where rail connections have been affected; airports and carriers typically publish updates for impacted passengers. The diplomatic dispute is of more interest to policy watchers and businesses with Japan–Russia exposure than to most individual travellers, but it could inform broader regional security assessments.

Sources and attribution

This article is based on reporting from the Associated Press as published by NPR, BBC reporting, The Washington Post and a Euronews video report. Direct phrases quoted in this story are attributed to the outlets and officials cited above.