On July 29, Japan's Ministry of Defense announced that a Sino-Russian joint cruise formation — consisting of the Type 055 destroyer CNS Anshan, the Type 052D destroyer CNS Kaifeng, the Type 903A replenishment ship CNS Kekexili Hu, and the Russian Navy corvette Gromkiy — had transited the Sōya Strait into the Sea of Japan on July 27.
The Japan Maritime Self-Defense Force Hayabusa-class missile boat JS Hayabusa shadowed the formation throughout the transit.
The signal of this voyage is not in the fact that it happened, but in how it happened — a route tracing Japan's self-declared "Exclusive Economic Zone" for almost its entire length, timed to coincide with the same week as Lindsey Graham's funeral in Washington, and choosing the Sōya Strait over alternative passages. Three coordinates intersecting to form not merely a navigation track, but a clear statement of a geopolitical boundary.
The Choice of the Sōya Strait
The Sōya Strait is the northernmost of the three passages connecting the Sea of Japan to the Sea of Okhotsk. By selecting this route, the Sino-Russian formation traced an arc hugging the northern edge of the Japanese archipelago.
Shen Yi's (沈逸) interpretation is direct: according to the route diagram released by the Japanese side's "official photographers," the formation remained almost entirely within what Japan unilaterally designates as its "Exclusive Economic Zone." This was not a passage — it was a demonstration.
Even more notable is the timing. The formation's transit through the Sōya Strait (July 27–29) coincided with Lindsey Graham's funeral in Washington. In the same week that one of the core architects of U.S. Middle East policy was being laid to rest, the Sino-Russian formation drew a line on the eastern flank of Asia. This temporal symmetry was no coincidence.
July 27: Sino-Russian joint cruise formation transits Sōya Strait into the Sea of Japan
July 27–29: Lindsey Graham's funeral held in Washington
July 29: Japan Ministry of Defense formally announces the movement
The Signal Density of the Formation
Three Chinese vessels plus one Russian — the formation's size is modest. But the presence of a Type 055 gives it a disproportionate signal value.
The CNS Anshan (Type 055) is the largest and most heavily armed destroyer in the Chinese Navy today. Its forward deployment is itself a signal of scarce-resource allocation — the Type 055 is not deployed on every cruise rotation. When it appears in a joint cruise formation, it means this mission has been assigned the task of "displaying the ceiling." The Type 052D is a mature mainstay platform, the Type 903A provides endurance for sustained deployment, and the Russian corvette Gromkiy supplies the ceremonial dimension of joint operations.
Four vessels, each with a distinct role, corresponding to four dimensions of the joint cruise: combat capability demonstration (055), formation coordination (052D), sustained deployment capacity (903A), and alliance symbolism (Gromkiy). One fewer vessel and the formation would lack completeness; one more and it would be redundancy. The restraint in the composition is itself a signal: this is not a provocation, it is a statement.
Within Range
Shen Yi's assessment is contained in a single sentence: "Every target on the Japanese mainland is within striking range." This is not rhetoric — the YJ-21 ship-borne hypersonic missile carried by the Type 055 has a range exceeding 1,000 kilometers, covering most of Japan's main island of Honshū from a launch position in the Sea of Japan.
The true deterrent power lies not in what you say, but in what the other side knows you can do — and knows that you know they know. The unspoken second half of the Sōya Strait voyage is: next time, it may not be just a voyage.