China has opposed the ‘smearing of its nuclear policy’ while insisting Beijing would not ‘engage in any nuclear arms race’

The US has accused China of dramatically expanding its nuclear arsenal, while doubling down on claims that Beijing had conducted secret nuclear tests.

Washington said the lapsing of New Start – the last treaty between top nuclear powers the US and Russia – earlier this month presented the possibility of striking a “better agreement” that included Beijing.

Christopher Yeaw, the US assistant secretary of state for arms control and non-proliferation, told the Conference on Disarmament in Geneva that New Start had been seriously flawed and “did not account for the unprecedented, deliberate, rapid and opaque nuclear weapons buildup by China”.

“Despite its claims to the contrary, China has deliberately and without constraint, massively expanded its nuclear arsenal without transparency or any indication of China’s intent or end point,” he said.