China appears to be building a large laser-ignited fusion research centre in the southwestern city of Mianyang, experts at two analytical organisations say, a development that could aid nuclear weapons design and work exploring power generation.

Satellite images reveal China is building a massive laser fusion facility, which can be used in nuclear weapons research as well.

China is reportedly constructing a large fusion research facility in the southwestern city of Mianyang, which could contribute to nuclear weapons development and research into energy production capabilities,

China is building a large-scale laser-ignited nuclear fusion research facility in Mianyang to enhance both nuclear weapons design and clean energy production. The facility's design mirrors the National Ignition Facility in California.

The number of Chinese operational nuclear warheads has increased by more than 100 to over 600, the Pentagon reported.