China conducted its first test of an intercontinental ballistic missile (ICBM) capable of being launched from a submarine, marking a significant advancement in its strategic nuclear forces. The missile, equipped with a dummy warhead, was fired on Monday shortly after midday Beijing time in the South Pacific, according to China’s state news agency. The missile reportedly landed accurately within the designated target zone.

The launch, described by China as routine, provoked unease among countries in the Pacific region. Before the test, neighboring states were notified, but concerns were subsequently voiced by several governments. New Zealand’s Foreign Minister Winston Peters characterized the development as unwelcome and troubling, emphasizing that his country and its Pacific neighbors do not support China using the region for missile testing. Australia described the event as "destabilising," while Japan’s Chief Cabinet Secretary Minoru Kihara expressed deep apprehension about China’s military activities and its limited transparency, calling the situation a serious concern for both Japan and the broader international community.

Taiwan’s Mainland Affairs Council criticized the test as a deliberate show of force by Beijing, asserting that it heightened regional tensions and undermined peace and stability. In contrast, China’s Foreign Ministry spokeswoman Mao Ning urged other countries not to overinterpret the missile launch.

Chinese state media offered a more assertive perspective. The Global Times, known for its nationalist tone, quoted Zhang Junshe, a researcher at a People’s Liberation Army think tank, who described the test as having "far-reaching significance." Zhang noted that submarine-launched ballistic missiles (SLBMs) provide China with a secure and mobile nuclear deterrent, capable of conducting prolonged underwater patrols and resisting detection or tracking efforts. He emphasized that these capabilities ensure nuclear counterstrike potential, even if land- or air-based nuclear forces are compromised.

China has previously tested land-based ICBMs capable of carrying nuclear warheads, most recently in 2024, but this marks its first SLBM launch in decades—the last such test occurred in the 1980s. The development follows China’s deployment of advanced nuclear submarines designed to enhance the survivability and flexibility of its strategic nuclear arsenal.

Submarine-launched missiles are considered a critical element in maintaining a credible second-strike capability, a key factor in nuclear deterrence theory. Unlike land-based systems, these underwater platforms are difficult to detect with satellite surveillance, making them a cornerstone of strategic stability from Beijing’s perspective. The test underscores China’s ongoing efforts to modernize and diversify its nuclear forces amid rising geopolitical tensions in the Indo-Pacific region.