A huge new military exercise involving thousands of troops, ships and fighter jets has been launched in Scotland to practise shooting down nuclear missiles.

Michael Fallon, the Defence Secretary, said Formidable Shield would combat the threat posed by North Korea and other “rogue states”, amid intensifying tensions between Kim Jong-un and Donald Trump.

“North Korean tests have shown the danger of rogue states developing longer range missiles,” he added.

“By hosting this cutting-edge exercise in anti-missile defence with allied navies, Britain is at the forefront of developing a more effective response to this growing threat.”

Pyongyang has fired two ballistic missiles over Japan in the past month, sparking warnings for people to take cover, after appearing to make significant advances towards creating a rocket capable of carrying a nuclear warhead.

North Korea’s intensifying experiments appear to have prompted the Formidable Shield exercise, which is the first time that Nato allies have practised defending against incoming ballistic missiles with no prior warning in Europe.

It launched the day after the US sent bombers and fighter jets over waters east of North Korea to send a “clear message that the President has many military options to defeat any threat”.

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Donald Trump appeared to threaten regime change in the country over the weekend, causing the North Korean foreign minister to accuse the President of “declaring war” in a speech at the United Nations.

American forces are leading the exercise off the coast of the Scotland, alongside troops from Britain, Canada, France, Germany, Italy, Spain and the Netherlands.

The Ministry of Defence (MoD) hailed Formidable Shield as “one of the most sophisticated and complex air and missile exercises ever undertaken in the UK”.

A Royal Navy Type 45 Destroyer and two Type 23 frigates are being joined by 11 other ships, 10 aircraft and 3,300 personnel for the month-long exercise.

They will work together to detect, track and shoot down live anti-ship and ballistic missiles.

Nato said the “major” exercise in the Outer Hebrides aimed to foster cooperation between allies in the face of possible threats from missile attacks.

Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb Show all 6 1 /6 Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb Photos released by North Korea show Kim Jong-un talking to subordinates next to a device thought to be the new thermonuclear weapon. There is no way of independently verifying the pictures STR/AFP/Getty Images Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb North Korea claims it has successfully tested an advanced hydrogen bomb which could be loaded onto an intercontinental ballistic missile AFP/Getty Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb A diagram on the wall behind Mr Kim shows a bomb mounted inside a cone STR/AFP/Getty Images Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb North Korean leader Kim Jong-Un (C) attending a photo session with participants of the fourth conference of active secretaries of primary organisations of the youth league of the Korean People's Army (KPA) in Pyongyang STR/AFP/Getty Images Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb A new stamp issued in commemoration of the successful second test launch of the "Hwasong-14" intercontinental ballistic missile KCNA via Reuters Kim Jong-un inspects weapon North Korea says is powerful hydrogen bomb A new stamp issued in commemoration of the successful second test launch of the "Hwasong-14" intercontinental ballistic missile KCNA via Reuters

Ships are being deployed to detect, track and defend against a range of live anti-ship and ballistic missiles, while being watched by Nato aircraft ensuring the airspace is clear.

Major components of Nato’s missile defence include four US Navy destroyers armed with the Aegis missile defence system based in Spain, a land-based system in Romania and an early warning radar in Turkey, all commanded from Ramstein base in Germany.

Commanders for the US 6th Fleet said Formidable Shield is planned to be a recurring event every two years designed to “assure allies and deter adversaries”.

Captain Shanti Sethi, commander of integrated and missile defence for the exercise, said it would “refine” capabilities and collective defence, adding: “As missile technology advances, maritime forces must be prepared to play an important role in providing swift and accurate defensive measures to deter adversaries.”

Exercises will continue until 18 October in the MoD’s Hebrides Range, off the north-west coast of Scotland.