The first new bomber in 30 years could cost nearly $700m (£569m) each and can carry nuclear and conventional weapons. As expected, specific details of the aircraft remain shrouded in secrecy. But US Defence Secretary Lloyd Austin said it was "a testament to America's enduring advantages in ingenuity and innovation". The B-21 Raider was unveiled during a ceremony on Friday at manufacturer Northrop Grumman's facility in California. Mr Austin said the plane would offer significant adva...