apan’s Prime Minister Sanae Takaichi attends a House of Representatives Budget Committee meeting at the Diet in Tokyo, Japan, 09 December 2025. Amid growing diplomatic tensions between Japan and China following Prime Minister Takaichi's remarks about Taiwan in November, Japan-China International Ferry Co., which operates the international ferry Jian Zhen Hao connecting Shanghai with Kobe and Osaka, announced on 08 December that it had suspended its service at the request of the Chinese side. EPA/FRANCK ROBICHON 
Japan and the US "reaffirmed their strong resolve to prevent any unilateral attempt to change the status quo by force and confirmed the readiness posture of both the Self-Defense Forces (SDF) and US forces," Japan's defence ministry said in a statement on Thursday.
The flight of two US B-52 strategic bombers with three Japanese F-35 stealth fighters and three F-15 air-superiority jets was the first time the US had asserted its military presence since China began military exercises in the region last week.
The display follows a joint flight of Chinese and Russian strategic bombers in the East China Sea and western Pacific on Tuesday and separate Chinese aircraft carrier drills that prompted Japan to scramble jets that Tokyo said were targeted by radar beams.
The encounter drew criticism from Washington, which said the incident was "not conducive to regional peace and stability" and reaffirmed that its alliance with Japan was "unwavering".
Both Japan and South Korea host US forces, with Japan home to the biggest concentration of American military power overseas, including an aircraft carrier strike group and a US Marine expeditionary force.
China denied Tokyo’s accusation, saying Japanese jets flying near the carrier had endangered its air operations south of Japan.
ACTIVITY NEAR SOUTH KOREA, TAIWAN
South Korea’s military said it also scrambled fighter jets when the Chinese and Russian aircraft entered its air defence identification zone on Tuesday, an area that extends beyond its airspace and is used for early warning.
Chinese military ships and aircraft operate almost daily around Taiwan, in what Taipei says is part of Beijing's ongoing pressure campaign.
On Thursday, Taiwan's defence ministry reported a stepped up Chinese military presence for a second day in a row. It said it had detected 27 aircraft, including nuclear-capable H-6K bombers, conducting a "joint combat readiness patrol", along with warships around the island.
Late on Wednesday, the ministry said Chinese J-16 fighters and H-6 bombers had again carried out long-range training in the Western Pacific after passing to the south of Taiwan.
Regional tensions have risen since Japanese Prime Minister Sanae Takaichi triggered a dispute with Beijing last month with her remarks on how Tokyo might react to a hypothetical Chinese attack on Taiwan.
China claims democratically governed Taiwan and has not ruled out using force to take control of the island, which sits just over 100 km (62 miles) from Japanese territory and is surrounded by sea lanes on which Tokyo relies.
(Reporting by Kaori Kaneko and Tim Kelly; Additional reporting by Ben Blanchard in Taipei; Editing by Chang-Ran Kim, Lincoln Feast and Michael Perry)