New Delhi: China is in the middle of significant modernization and expansion of its nuclear arsenal, a report released by a Swedish watchdog tracking arms trade and disarmament has said.

China maintains at least 350 nuclear warheads, more than double of Indiaโ€™s 160, many fewer than the US and Russia, and has rapidly expanded its launch capabilities in recent years, said Stockholm International Peace Research Institute (SIPRI).

 โ€œSince around 2017, China has started to put in place a triad of nuclear forces – solid-fuelled mobile and siloed land-based missiles, nuclear-powered ballistic missile submarines (SSBNs), and bombers with a full, re-established nuclear mission – in order to strengthen its nuclear deterrence and counterstrike capabilities in response to what it sees as a growing threat from other countries,โ€ SIPRI said in the report released on Monday.

The report said the ratio of stockpiled and stored warheads has changed because additional and new launchers became operational in 2021.

โ€œThese warheads have been assigned to Chinaโ€™s operational land- and sea-based ballistic missiles and to nuclear-configured aircraft,โ€ the annual Sipri report, titled Armament, Disarmament and International Security, said.

The report was released a day after Chinese defence minister, Wei Fenghe, hailed his countryโ€™s progress in โ€œnuclear deterrenceโ€ in a speech at the just-concluded Shangri La Dialogue in Singapore.

โ€œChina has developed its capabilities for over five decades. Itโ€™s fair to say there has been impressive progress,โ€ he said.