The flight was over international waters and was announced by the Russian defence ministry on the same day as Moscow complained about the US-South Korean War games
Russian nuclear bombers fly near North Korea in rare show of force
Russian nuclear-capable strategic bombers have flown a rare mission around the Korean peninsula at the same time as the United States and South Korea conduct joint military exercises that have infuriated Pyongyang.
Russia, which has said it is strongly against any unilateral US military action on the peninsula, said Tupolev-95MS bombers, codenamed "Bears" by Nato ATO, had flown over the Pacific Ocean, the Sea of Japan, the Yellow Sea and the East China Sea, prompting Japan and Seoul to scramble jets to escort them.
The flight, which also included planes with advanced intelligence- gathering capabilities, was over international waters and was announced by the Russian defence ministry on the same day as Moscow complained about the US-South Korean war games.
"The US and South Korea holding yet more large-scale military and naval exercises does not help reduce tensions on the Korean peninsula," Maria Zakharova, a spokeswoman for the foreign ministry, told a news briefing in Moscow.
"We urge all sides to exercise maximum caution. Given the arms build-up in the region, any rash move or even an unintended incident could spark a military conflict."
In Beijing, Chinese Foreign Ministry spokeswoman Hua Chunying did not comment specifically on the Russian mission only reiterating that China hoped all sides could quickly return to talks and appropriately and peacefully resolve the situation.
The United States and South Korea began the long-planned joint military exercises on Monday, heightening tensions with Pyongyang which called the drills a "reckless" step towards nuclear conflict.
Some military experts regard the hulking Russian turboprop bombers which made the flight near the Korean peninsula as a relic of the Cold War. But Russia has upgraded the aircraft since the collapse of the Soviet Union and, since 2007, has used the planes to back its diplomacy with shows of force and to probe other countries' air spaces.
Moscow said the bombers had been accompanied by Sukhoi-35S fighter jets and A-50 early warning and control aircraft.
The A-50s, the Russian equivalent of the Boeing E-3 Sentry Awacs aircraft, are designed to track aerial and ground targets at a long range, among other capabilities.
Moscow did not say how many aircraft had taken part or when the mission had taken place.
"Our long-range aviation pilots, according to an established plan, regularly carry out flights over neutral waters over the Atlantic, the Arctic, the Black Sea and the Pacific Ocean from their bases and from tactical airfields," the defence ministry said in the same statement.
It said the TU-95MS bombers were refuelled in mid-air during the mission, and that during parts of the route they had been escorted by South Korean and Japanese military jets.
Russia, which shares a border with North Korea, has repeatedly voiced concerns about rising tensions on the Korean peninsula caused by Pyongyang's nuclear missile programme, and has also complained about possible plans by Japan to deploy a US anti-missile system on its soil.
Japan has at least twice before this year been forced to scramble its jets to intercept Russian aircraft.