Japan is considering countermeasures following Russian President Putin's visit to a disputed island, according to NHK

Visits by Russian leaders to the disputed islands off Hokkaido have recurred for decades, and Tokyo's response has followed a well-worn script: diplomatic protest, summons of the ambassador, and occasionally symbolic countermeasures such as tightened travel or investment restrictions on the territories. The pattern in past episodes has been contained bilateral friction rather than escalation, with Japan careful to keep the row separate from the periodically stalled peace treaty negotiations. Where these flare-ups have had wider market consequence is when they touch energy cooperation, particularly Japanese participation in Russian LNG projects, which has historically been insulated even through periods of sanctions pressure. The distinction worth drawing is between ceremonial protest and any measure affecting trade or sanctions alignment with G7 partners, since only the latter re-rates anything. The follow-ons are the formal protest language, any cabinet-level statement, and whether countermeasures extend beyond the rhetorical. As reported by domestic media rather than announced by the government, the signal remains preliminary.