 Japan expresses concern over Russia-China joint bomber flight. Japan has voiced its concerns to authorities in Russia and China via diplomatic channels over joint patrols of the two countries' warplanes near Japan's territory on Wednesday. Chief Captain Secretary Yulkazu Matsuno told a news conference in Tokyo on Thursday. Matsuno emphasized, the intensification and expansion of such activities near our country raises serious security concerns. He also said that Japan had told China and Russia via diplomatic channels about its concerns. On Wednesday, the Japanese authorities reported that two strategic H-6 bombers of the Chinese People's Liberation Army and two suspected Russian aircraft flew over the Sea of Japan. No violations were reported, but Japanese fighter aircraft scrambled in response. The joint staff on the Japanese Self-Defense Forces published a report saying that the two suspected Russian Tu-95 bombers were seen flying near the island of Tsushima while on a patrol above the South China Sea and the Sea of Japan. The Russian Defense Ministry told reporters about a joint patrol by a group of Russia's Tu-95MS, strategic bombers and the Chinese H-6 strategic bombers above the Sea of Japan and the South China Sea. Russia's top brass said, the flight lasted about eight hours and was conducted in strict compliance with international law, with no intrusion in two foreign air spaces.