Stealth bomber B-21 that US boasts is ‘most advanced warplane ever’ unveiled

The US Airforce previously warned that it needed a new bomber to “take on much more complicated threats, like the threats that we fear we would one day face from China, Russia”.

​The US Airforce previously warned that it needed a new bomber to “take on much more complicated threats, like the threats that we fear we would one day face from China, Russia”.