The US’s £639million ‘invisible’ B-21 nuclear stealth bomber, which can ‘strike anywhere in the world’, was unveiled today amid WW3 fears

AMERICA’S newest stealth nuclear bomber, which its makers say can hit anywhere in the world, is set to be unveiled.

The B-21 Raider – which will cost £639million per plane – is due to be unveiled later today amid heightened fears of a nuclear war with Russia.

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The aircraft will form the backbone of the US airborne nuclear weapons fleet in the future and is designed to survive after hitting even the most heavily defended targets.

A key feature is the ability to perform unmanned missions, with pilots flying it remotely from America.

The Batwing aircraft is the successor to the B-2, which was itself revolutionary when it entered service and was also manufactured by Northrop Grumman.

Around 100 aircraft are slated to enter service with the US Air Force and it is widely compared to the most advanced fighter jet ever built.

“With the ability to keep targets compromised anywhere in the world, this weapon system is critical to our national security,” said Doug Young, vice president of strikes at Northrop Grumman.

Each aircraft will cost around £639m, about half the cost of the B-2, and is also set to replace the B-1 bomber.

The B-2 is designed to perform long-range strike missions in heavily defended areas with a good chance of surviving the mission by dodging enemy radar.

Little is known about the B-21 so far, although there has been speculation that a mysterious figure spotted in the top-secret Area 51 could be the plane.

Satellite photos appear to show a large, unidentifiable object sitting at the end of a runway near a large white hangar.

From the information that has leaked, it draws much of its design from its predecessor.

As America’s potential adversaries develop and deploy new sophisticated air defense systems, much of the focus during development has been on survivability.

The B-21 must be able to penetrate the toughest defenses, and China has boasted that its radar can detect even the stealthiest aircraft.

In addition to conducting bombing raids, the aircraft will be able to gather and exchange intelligence to support direct attacks on multiple targets.

The use of open source software allows the aircraft to be easily upgraded, ensuring it remains flexible and up to date while extending its useful life.

The Chinese themselves have been dealing with stealth technology for years.

Images have surfaced showing the Xian H-20 stealth depth bomber, which bears a striking resemblance to its US counterparts.

The US arms giant received an order for a new long-range bomber in 2015.

It was named Raider in honor of the Doolittle Raiders of World War II.

On April 18, 1942, 80 airmen in 16 B-25 Mitchell aircraft flew the first attack on Tokyo after the Japanese attack on Pearl Harbor.

The raid was planned and directed by James “Jimmy” Doolittle of the US Army Air Force.

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