Security and defence analyst Michael Clarke has just been answering your questions - on the Trump security leak, the Ukraine war and Russia-US ceasefire talks. Watch the Q&A below.

See the evolution of Boeing's design of the F-47, a 6th generation stealth fighter jet, compared to competing NGAD concepts ...

The head of the United States Strategic Command doesn't believe that 100 Northrop Grumman B-21 Raider long-range bombers will ...