This zone was unilaterally established by the South Korean authorities in 2013 in response to the creation of a similar zone by China.
The Russian Ministry also confirmed that the flights of Russian long-range aviation in this area were carried out as part of the first Russian-Chinese air patrols "with the aim of developing Russian-Chinese relations of a comprehensive partnership ... and also strengthening global strategic stability." On the Russian side, in addition to the A-50U (from the Ivanovo air base), two Tu-95MS strategic bombers (from the Ukrainka air base in the Amur Region) capable of carrying nuclear weapons participated.
On the Chinese side, two H-6 bombers (an improved version of the Soviet Tu-16 developed in the 1950s) capable of carrying nuclear weapons took part in the patrol. They, according to South Korean intelligence, also entered the South Korean air defense identification zone, but did not violate the country's airspace.
Russian planes flew near the Dokdo Islands (Takeshima), because of which since the beginning of the 20th century there has been a dispute between Korea and Japan. As a result, Maxim Volkov, Charge d'affaires of the Russian Federation in South Korea, and Qiu Gohong, ambassador of the People's Republic of China in this country were called to the South Korean Foreign Ministry. Also, the head of the national security department under the South Korean president, Jong Yi Yong, expressed his protest to the secretary of the Russian Security Council and demanded that the Security Council of the Russian Federation assess the situation and take “appropriate measures”. To Beijing, a similar demand was not made: his planes violated, according to Seoul, only the air defense zone.
Immediately after South Korea, Moscow and Seoul made claims against Tokyo, which also claims to be islands. “The Takeshima Islands are our territory,” said Taro Kono, the head of the country's foreign ministry. “Japan should take measures against the Russian aircraft that intrude into our airspace. This is incompatible with our position that South Korea is taking steps in this direction. ” In Seoul, the claims rejected. “According to international law, Dokdo is historically and geographically our native territory, so we cannot accept the statements of the Japanese side,” the South Korean Foreign Ministry said.