If you're a "director" of an ammunition warehouse and screwed up precautionary measures which led to an explosion - what's your best course of actions?
a) announce "sorry, i screwed up. Pls fire me"
b) blame evil russians
Also, the Russian government is run by a murderous autocrat. The agencies directly under his control certainly are evil.
Qui bono?
Obama-Biden administration is major cause of millions of deaths in Middle East, Africa, etc. Yet Obama got a Nobel prize for peace and Biden accuses other of being a "killer".