No, I haven't. I don't have access to classified information, so I just can't comment on that.
I do want to seize the opportunity to say that I'm not worried about China engaging in such an attack because China has the exact same interest that western countries do in keeping space a safe place for its satellites. There's a huge opportunity for diplomacy with China on this issue. Of course, we can walk and chew gum when it comes to a great power like China. We can stand fast and build up our defences while co-operating with China on discrete issues where there is a shared interest, and this is one of them.