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Glinting in the autumn sun on a parade ground in Beijing, the People's Liberation Army missiles moved slowly past the crowd on a fleet of giant camouflaged lorries.

Needle-sharp in profile, measuring 11 metres long and weighing 15 tonnes, each bore the letters and numerals: "DF-17".

China had just unveiled to the world its arsenal of Dongfeng hypersonic missiles.

That was on 1 October 2019 at a National Day parade. The US was already aware that these weapons were in development, but since then China has raced ahead with upgrading them.

Thanks to their speed and manoeuvrability – travelling at more than five times the speed of sound – they are a formidable weapon, so much so that they could change the way wars are fought.

Which is why the global contest over developing them is heating up.

"This is just one component of the wider picture of the emerging geopolitical contest that we're seeing between state actors," says William Freer, a national security fellow at the Council on Geostrategy think tank.

"[It's one] we haven't had since the Cold War."

The Beijing ceremony raised speculation about a possible growing threat posed by China's advancements in hypersonic technology. Today it leads the field in hypersonic missiles, followed by Russia.

The US, meanwhile, is playing catch-up, while the UK has none.

Mr Freer of the Council on Geostrategy think tank, which received some of its funding from defence industry companies, the Ministry of Defence and others, argues that the reason China and Russia are ahead is relatively simple.

"They decided to invest a lot of money in these programmes quite a few years ago."

Meanwhile, for much of the first two decades of this century, many Western nations focused on fighting both jihadist-inspired terrorism at home, and counter-insurgency wars overseas.

Back then, the prospect of having to fight a peer-on-peer conflict against a modern, sophisticated adversary seemed a distant one.

"The net result is that we failed to notice the massive rise of China as a military power," admitted Sir Alex Younger, soon after retiring as chief of Britain's Secret Intelligence Service in 2020.

Other nations are also racing ahead: Israel has a hypersonic missile, the Arrow 3, designed to be an interceptor.

Iran has claimed to have hypersonic weapons, and said it launched a hypersonic missile at Israel during their brief but violent 12-day war in June.

(The weapon did indeed travel at extremely high speed but it was not thought to be manoeuvrable enough in flight to class as a true hypersonic).

North Korea, meanwhile, has been working on its own versions since 2021 and claims to have a viable, working weapon (pictured).

The US and UK are now investing in hypersonic missile technology, as are other nations, including France and Japan.

The US appears to be strengthening its deterrence, and has debuted its "Dark Eagle" hypersonic weapon.

According to the US Department of Defense, the Dark Eagle "brings to mind the power and determination of our country and its Army as it represents the spirit and lethality of the Army and Navy's hypersonic weapon endeavours".

But China and Russia are currently far ahead - and according to some experts, this is a potential concern.

Hypersonic means something that travels at speeds of Mach 5 or faster. (That's five times the speed of sound or 3,858 mph.) This puts them in a different league to something that........

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