Moscow warns of possible countermeasures
Russia has warned that it is considering retaliatory measures against Japan after Tokyo announced additional sanctions connected to Russia’s ongoing invasion of Ukraine. Maria Zakharova, director of the Russian Foreign Ministry’s Information and Press Department, said on the 5th that Moscow would respond to what she described as Japan’s “unfriendly” actions.
“We will take appropriate countermeasures in response to the unfriendly actions,” Zakharova said, according to the report. She indicated that any measures could target areas linked to Japan’s national interests, although she did not provide specific details about the possible response.
Japan targets sanctions evasion and Russian-linked assets
The Japanese government announced its latest measures on the 2nd. They include restrictions aimed at vessels believed to be part of Russia’s so-called “shadow fleet,” a network of ships accused of helping transport Russian crude oil while avoiding international sanctions and price restrictions.
Japan also announced asset freezes targeting nine Russian military-related individuals and 33 organizations. The measures form part of Tokyo’s wider effort to coordinate with the Group of Seven and other international partners while maintaining pressure on Moscow over the war in Ukraine.
For Japan, the issue is closely connected to national security and the rules governing international trade. Tokyo has repeatedly argued that unilateral changes to borders by force could create risks far beyond Europe, particularly in the Indo-Pacific region. Japanese officials have emphasized that the principles at stake in Ukraine—respect for sovereignty, territorial integrity and international law—are also relevant to Japan’s own security environment.
Moscow criticizes Japan’s diplomatic alignment
Zakharova criticized Japan’s policy, claiming that the government was following a diplomatic course lacking independence in order to remain aligned with the United States and European countries. Moscow has made similar criticisms of Japan and other G7 members since sanctions were introduced following Russia’s full-scale invasion of Ukraine.
She also referred to the Japan-Soviet Trade and Navigation Treaty, saying that it remains valid. Zakharova called on Japan not to take measures that would disadvantage Russian vessels or crew members. The reference suggests that Russia may seek to frame any future action as a response to what it regards as discriminatory treatment in trade or maritime activity.
Potential impact on Japan
The immediate form and timing of any Russian retaliation remain unclear. Possible areas of concern could include diplomatic restrictions, trade-related measures, maritime procedures or actions affecting Japanese companies operating in or dealing with Russia. However, no specific countermeasure was announced in the statement.
Japan has continued to balance economic considerations with its foreign-policy commitments. The two countries have longstanding commercial, fishing and maritime ties, while relations have deteriorated sharply over the war and disputes surrounding the Northern Territories. Japan has also worked to reduce vulnerabilities in energy and supply chains, although global commodity markets mean that developments involving Russian oil and shipping can still have wider consequences.
For foreign observers, the dispute highlights Japan’s role in the international sanctions coalition. Tokyo’s approach reflects both solidarity with Ukraine and concern that weakening sanctions enforcement could undermine the broader rules-based order. The latest exchange also shows how Japan’s decisions, even when coordinated with its partners, can trigger direct diplomatic pressure from Moscow.
Further developments will depend on whether Russia moves beyond its warning and announces concrete measures. Japan is expected to continue monitoring the situation while coordinating with the G7 and assessing any effects on Japanese citizens, businesses and maritime interests.
