China has warned that it will take unspecified countermeasures if the United States and Japan hold military drills near Taiwan, adding fresh tension to an already volatile region. The warning underscores Beijing’s sensitivity to any military activity it sees as challenging its claims over the self-ruled island.

According to Reuters, Chinese officials said they would adopt “necessary measures” in response to the exercises, though they did not spell out what those steps might include. The comments come as Washington and Tokyo deepen security coordination amid growing concern over China’s military pressure on Taiwan and the wider Indo-Pacific.

Taiwan remains one of the most dangerous flashpoints in East Asia. Beijing regards the island as part of its territory and has repeatedly objected to foreign military engagement in the area, while the U.S. and Japan say their defense cooperation is aimed at preserving regional stability and deterring coercion.

The latest exchange highlights the risk that routine military planning can trigger political escalation. With tensions already high, any new drills near Taiwan are likely to draw close scrutiny from governments across the region.