You sound like Bukovksiy:
...After any plane crash, train derailment, or industrial accident, experts conduct analyses and seek to determine the culpability of anyone who had the slightest connection with what occurred. Likewise with crime: in a lawful society, even petty offenses are subject to investigation, judgment, and punishment, and serious offenses all the more so. War crimes? The embers in Bosnia had not yet cooled before an international tribunal was established to look into the atrocities committed in that conflict.
Only the USSR has been given a special dispensation. What happened there was a catastrophe that affected practically every country in the world, wasted hundreds of billions of dollars, took scores of millions of lives, and nearly brought about global destruction, and yet no one, no one, has been brought to account. Communism has collapsed, but the man (for example) who was in charge of executing thousands of captive Polish officers in the Katyn forest during World War II is in Moscow, living out his years on a pension. Similarly alive and well are Daniil Kopelyansky, the state-security officer who interrogated Raoul Wallenberg, and General Pavel Sudoplatov, the organizer of Trotsky’s assassination in Mexico.
Three criminals: neither Poland, nor Sweden, nor Mexico has sought the extradition of any of them.
On his own admission, former KGB general Oleg Kalugin planned the murder, by poisoned umbrella, of the Bulgarian dissident Georgi Markov in London in 1978. Kalugin even wrote about the incident not long ago in the Mail on Sunday, a popular British tabloid, under the provocative headline, "I Organized Markov’s Execution." Yet, although Kalugin travels frequently abroad, promotes his memoirs, and gives interviews to the press, and although the Markov case is still open, it seems never to have entered anyone’s head to prosecute him.