Sergei Skripal – The Russians did it?

The evidence is crystal clear, beyond any doubt. The Russians did it. This is just like the sinking of the Choeonan, the killing of Kim Jong Nam, the sarin gas used by Assad. It is like the murderer deliberately left behind the murder weapon with his name carved on it.
The clearer and more obvious the evidence, the more smelly is the plot. Are the Russian intelligent agents so amateurish,