Putin's lethally negligent failure can't be covered up. The Moscow attack leaves him weaker than ever | Simon Tisdall

There is no doubt that he, as Russia's head of state and overall chief of its security forces, bears ultimate responsibility for what was by any measure a catastrophic failure.

And it points to another fundamental weakness in his personal and political position: he is so out of touch, so isolated.

Read at www.theguardian.com