据官方媒体报道，俄罗斯和中国在太平洋海域首次举行了联合潜艇巡逻。

俄罗斯太平洋舰队发布声明称，此次柴电潜艇巡逻任务始于8月初，参与行动的俄军潜艇“沃尔霍夫”号从符拉迪沃斯托克基地出发后，航程约达2000英里。

声明称，潜艇在日本海和东海执行了巡逻任务。

中方尚未证实此次巡逻行动，但官方媒体《环球时报》在周三的报道中援引俄方消息提及此事。

《环球时报》援引中国军事专家张军社的观点称，首次联合潜艇巡逻表明中俄两国战略互信达到高水平。潜艇保持联络不仅需要更高技术水平，还需更深入的交流合作。

张（注：此处姓氏需根据《新华社人名翻译规范》补充完整名）向《环球时报》表示，中俄海军通过联合演习和巡逻，正稳步提升共同维护海上安全与稳定的能力。

过去几年间，中国与俄罗斯持续加强军事合作。

2021年，一支由10艘中俄军舰组成的舰队完成了对日本主岛的绕航，此次行动被称作中俄两国在西太平洋的首次联合海上巡逻。

此后每年都会举行联合巡逻。

塔斯社周三报道称，此次联合巡逻的目的是加强两国海军合作，维护亚太地区的和平与稳定，监控海域并保护俄中海上经济设施。

北京与莫斯科持续深化合作领域。根据美国海岸警卫队发布的声明，自2023年起，中俄已在阿拉斯加附近海域展开联合海空巡逻，其中包括去年四艘中国海警船与两艘俄罗斯边防舰艇在美俄海上边界附近的白令海进行的联合巡航。

在另一项行动中，美国海岸警卫队本月早些时候表示，正在监测五艘中国科考船在美国北极水域的活动。

与此同时，根据北美防空司令部（NORAD）的声明，过去一周内，该司令部已对至少四架俄罗斯侦察机进入阿拉斯加防空识别区的事件作出应对。

北美防空司令部（NORAD）声明称，俄罗斯在阿拉斯加防空识别区的此类活动属常态行为，不被视为威胁。

但北美防空司令部发布的记录显示，一周内出现四次飞行实属异常。根据该机构声明，今年俄罗斯军机曾于7月和4月各一次、2月两次被追踪进入防空识别区。

Russia and China have conducted their first-ever joint submarine patrol in the Pacific, according to reports in state-run media.

The patrol by diesel-electric submarines began in early August, and the Russian sub involved, the Volkhov, covered around 2,000 miles during its voyage from its Vladivostok base, according to a statement from the Russian Pacific Fleet.

The subs patrolled in the Sea of Japan and the East China Sea, the statement said.

China has not confirmed the patrol, but the state-run Global Times mentioned it in a report Wednesday, citing the Russian reports.

The first joint submarine patrol indicated a high level of strategic mutual trust between China and Russia. Having submarines keeping in contact requires not only higher technical expertise but also more in-depth exchanges, the Global Times quoted a Chinese military expert, Zhang Junshe, as saying.

Through the joint drills and patrols, the Chinese and Russian navies are steadily boosting their capabilities in jointly safeguarding maritime security and stability, Zhang told Global Times.

China and Russia have been stepping up military cooperation in the past several years.

In 2021, in a voyage billed as the first joint China-Russia naval patrol in the western Pacific, a flotilla of 10 Chinese and Russian warships made a circumnavigation of Japans main island.

Joint patrols have occurred annually since.

TASS reported Wednesday that the goal of the patrols is to strengthen naval cooperation between the two countries, ensure peace and stability in the Asia-Pacific region, monitor the maritime area and protect Russian and Chinese maritime economic facilities.

Beijing and Moscow have also been expanding the range of their cooperation. Joint air and sea patrols have occurred off Alaska since 2023, including a joint patrol of four China Coast Guard vessels and two Russian Border Guard vessels patrolling in the Bering Sea near the US-Russia maritime border last year, according to a US Coast Guard release.

In a separate action, the US Coast Guard said earlier this month it was monitoring the activities of five Chinese research ships in US Arctic waters.

Meanwhile, the North American Aerospace Defense Command (NORAD) has responded to at least four flights of Russian surveillance planes into the Alaska air defense identification zone in the past week, according to statements from the command.

This Russian activity in the Alaskan ADIZ occurs regularly and is not seen as a threat, a NORAD statement said.

But a review of NORAD releases shows four flights in a week to be unusual. Russian aircraft have been tracked in the ADIZ in single instances in July and April and twice in February this year, according to NORAD statements.