Name a country in the world that is'nt training its military for an eventual war against whatever country it deems to be its natural threat, you would be a fool not too.
I never see anything in the press about the UK training for war against Russia.. odd that.
It goes on to say it is not clear what China is trying to prove by such flight
Exactly the same as Russia does with the incursions to the North of the UK. Testing response and ability to carry out / train for such operations.
Or the US does by overflying the disputed islands, ensuring the rights of free passage and monitoring what is going on..
It's all a bit of none news really to fill copy space.