Unfortunately it is the weak who destroy the strong.
Once you've lived the inside-out world of espionage, you never shed it. It's a mentality, a double standard of existence.
There is a big difference between fighting the cold war and fighting radical Islam. The rules have changed and we haven't.
Never trade a secret, you'll always get the short end of the bargain.
The fact that you can only do a little is no excuse for doing nothing.
In itself, the practice of deception is not particularly exacting; it is a matter of experience, of professional expertise, it is a facility most of us can acquire.