Japan recently launched a new class of destroyer with top-of-the line US missile-defense technology, and despite Japan’s mostly defensive posture, China portrayed the ship as a dangerous menace.
The seven decades since World War II, which concluded with the US dropping two atomic bombs on Japan, have seen the rise of a strong US-Japanese alliance and peace across the Pacific.
Japan, following its colonization of much of China during the war, renounced military aggression after surrendering to the US. Since then, Japan hasn’t kept a standing military but maintains what it calls a self-defense force. Japan’s constitution strictly limits defense spending and doesn’t allow the deployment of troops overseas.
But threats from North Korea, which several times has fired nuclear-capable missiles over Japan, have prompted a desire in Tokyo for missile defenses, which the US has obliged, manifesting itself in part in Japan’s new Maya destroyer class.

Japan’s Maya-class ballistic missile defense destroyer
(Japanese Maritime Self-Defense Force)
“It’s not a big deal that they have this ship,” Veerle Nouwens, an Asia-Pacific expert at the Royal United Services Institute, told Business Insider. “They’re using it for military exchanges or diplomacy. That’s effectively what it’s doing by going around to India, Sri Lanka, and Singapore.”
The new destroyer isn’t a radical departure from Japan’s old ones and will spend most of its time training with and visiting neighboring militaries. The destroyer isn’t exactly a rubber ducky, but it has one of the more peaceful missions imaginable for a warship.
One reason it may have drawn rebuke from Beijing is simple geography. This destroyer will have to pass through the South China Sea, and that is extremely sensitive for Beijing, which unilaterally claims almost the whole sea as its own in open defiance of international law.
China’s Global Times state-linked media outlet responded to the ship’s launch by saying it was “potentially targeting China and threatening other countries,” citing Chinese experts.
“Once absolute security is realized by Japan and the US, they could attack other countries without scruples,” one such expert said, “which will certainly destabilize other regions.”

The various territorial claims over the South China Sea
China’s real game
“China seeks full control over the South China Sea,” Nouwens said. “We can say that quite squarely. It seeks to displace the US from its traditional position from its regional dominance in Southeast Asia and the Asia-Pacific more widely.”Since World War II, the US, particularly the US Navy, has enforced free and open seas and a rules-based world order. Imposed at a massive cost to the US, this order has enriched the world and specifically China, as safe shipping in open waters came as a given to businesses around the globe.
But now, Nouwens said, “China is threatening to lead to a situation where that may not be a given anymore.”
China has repeatedly threatened force against countries that seek to undertake simple activities, like fishing, within their own UN-designated maritime borders. But when a US Navy ship passes through the South China Sea, Beijing calls it provocative, unhelpful, or destabilizing.
“When other countries do it, it’s threatening,” Nouwens said. “When China does it to other countries, it’s fine.”
That the only two countries to ever engage in nuclear war can now work together as partners looking to protect the rights of all countries on the high seas might represent a welcome and peaceful development.
But for Beijing, which fundamentally seeks to undermine that world order to further its goals of dominating Asia, it’s cause for worry.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.