Secret evidence is no evidence at all. The idea that anyone should fall for the spooks' appeal to authority is puzzling to me. Or that someone would consider them in any way or form can to be politically neutral entities.
I mean you know what would also explain being friendly towards Russia except being a Russian agent?  Seriously believing that conflict with China is inevitable. Sounds like anyone?
Because once you start from that assumption you really can't afford to push Russia into dependence of China no matter whether you like the balance of forces in Ukraine or not.