Putin is given far too much credit. But the Russian wetworks division, under Putin's authority, has its fingerprints all over the Salisbury attack.
> shouldn't people like Assange reveal it?
Largely Assange has been an anti-liberal democracy apologist for the last 5+ years. A sad turn for someone starting at a radical anarchist position, but it's been pretty obvious. He's also largely destroyed any of Wikileaks rep as a honest broker and reduced it to the reputation of "anti-US intelligence". AFAICT, he's operating as a (probably unwitting) Russian front these days.