There are also some in South Korea who claim that the Japanese island of Tsushima – halfway between the Korean peninsula and Nagasaki prefecture in mainland Japan – is historically a Korean territory known as Daemado and should be returned.

Russia: Soviet forces seized and annexed the islands of Iturup (known in Japanese as Etorofu), Kunashir, Shikotan and the Habomai islets, on the very southern tip of the Kuril Islands, in the closing days of World War II. Japan’s position is that the islands – which it knows as the Northern Territories – were not a part of the Kuril archipelago and therefore their sovereignty should not have been part of the 1951 San Francisco Peace Treaty between the Allies and Japan.

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WHAT ARE THE LATEST DEVELOPMENTS IN THESE DISPUTES?

Chinese fishing boats have also been seen operating within these waters, a development that Tokyo assumes is at the behest of Beijing and is similarly designed to reduce Japan’s claim to control.

Takeshima/Dokdo: Tokyo has marked Takeshima Day every February 22 since 2005 and has repeated its calls for the islands to be returned. Each event is followed by Japan’s diplomatic representative to Seoul being summoned by the foreign ministry for a formal complaint to be registered.

Japan is continuing its efforts to publicise the issue through web pages and media coverage, pointing out that it has invited South Korea to have the International Court of Justice decide on the issue of sovereignty on three occasions since the 1950s. Seoul has declined each time.

Tsushima/Daemado: The Korean government’s 1948 claim to Tsushima was rejected by the Supreme Commander of the Allied Powers the following year, a decision that was accepted by the government in Seoul, though some in the country today still want the islands returned.

Kuril Islands/Northern Territories: Japan has in the past made offers of financial assistance to residents of the islands in an attempt to win them over to the idea of Tokyo assuming control, although locals’ resolve to remain part of Russia appears to have hardened in recent years as a result of investment in the region by Moscow.

There have been suggestions that Russia might be willing to return the two southernmost islands to Japan if it gives up its claims to the remainder of the territory, but that suggestion was rejected by Tokyo. The issue has been a sticking point in bilateral relations, with the two nations not yet signing a post-World War II peace treaty because of the dispute.

Under President Vladimir Putin, Russian attitudes to the islands’ future have hardened and there is little likelihood of the territory being returned.

IS THERE A RISK OF CLASHES IN ANY OF THESE DISPUTES?

China: Of all Japan’s territorial disputes, the one over the Diaoyu Islands is considered the most volatile, especially since Beijing passed new legislation earlier this month to allow coastguard vessels to use force in waters it believes are its territory, even if these are disputed.

Japanese officials have since responded by saying Japan’s coastguard could directly fire a weapon against foreign official vessels aiming to land on the islands.

Analysts also say there is always the possibility that an accident – such as a minor collision between coastguard ships – could lead to a rapid escalation of hostilities. Japan, which has a security treaty with the United States, has welcomed Washington’s reassurances that it will defend Japan in the event of a conflict over the islands.

Taiwan: On rare occasions, Taiwanese fishing boats have been sighted close to the Diaoyu Islands, but not in a concerted or organised way. There have been no confrontations between coastguard or military vessels sent by Taipei.

North Korea: The islands lie off the coast of South Korea and there have been no incidents involving Pyongyang.

Russia: Moscow has stationed significant military assets on the islands – including anti-shipping missiles and advanced fighter jets – and there is little likelihood of Japan testing the Russians’ military resolve. The most likely incident is an accidental clash between sea or air units.

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WHAT ARE THE CHANCES OF THESE DISPUTES BEING RESOLVED?

Analysts expect constant manoeuvring between the rival powers over the question of these disputed territories’ sovereignty, but little change in the status quo.

“China has undoubtedly become very provocative on the issue of the Senkakus, but it is not clear quite how far Beijing is willing to go given that the US has clearly confirmed that it is committed to its security pact with Japan,” said Akitoshi Miyashita, a professor of international relations at Tokyo International University. “It would take the use of force there to change the sovereignty of that territory and I do not know if China is ready to go to those lengths.”

Stephen Nagy, an associate professor of international relations at Tokyo’s International Christian University, said he expected China to “continue its efforts to press its claims to the islands and to delegitimise Japan’s sovereignty” of the Diaoyus.

Both Nagy and Miyashita suggested there was close to no possibility of Russia’s Putin agreeing to return the Northern Territories to Japan, although he might be convinced to propose the joint development of natural resources in the region.

Miyashita pointed out, however, that Tokyo was unlikely to agree to assist in the development of the islands unless there was a firm commitment for their return. That leaves the two sides at an impasse.

And with bilateral relations between Tokyo and Seoul at a 40-year low, the analysts suggested there was similarly negligible likelihood of progress on the issue of Korean-held Dokdo.