It is funny, though, that if Russia were to use nuclear weaphons, the European countries would finally do a 100% embargo on all Russian products. Seems like waiting for that is a fools errand?
Politics is the art of what's possible. Europe could go cold turkey off Russian oil, but it would require heavy rationing until other sources could be found.
Politically that's a no go today. Most Europeans want to be off Russian oil, but if you tell them what it's going to take, they will balk.
If things get much more serious for Europe, then the political will will shift.
In 1939 the US realized that it was almost certainly going to end up in the war in Europe, but the political will was not there. In the 1940 presidential election there was a fairly strong isolationist sentiment and that drove the vote to some degree. Roosevelt still won, but by a smaller margin then in 1932 and 1936.
Pearl Harbor completely erased the isolationism. Charles Lindbergh, who had been one of the most vocal isolationists wanted to do anything he could for the war effort. He tried to join the military, but Roosevelt's administration prevented it because of his pre-war isolationism. He became a consultant for Lockheed instead and ended up flying some combat missions in the South Pacific off books.
European politicians should make their people aware of what cutting off Russian oil cold turkey means economically so if Russia escalates enough people are prepared for what it necessary. Politically it's an impossible thing right now, but if Russia uses nukes, it might become possible to cut off Russian oil and deal with the shortages.
The KGB educated Putin may have some serious issues with the new anti-propaganda digitally weaponized Ukraine. This article is remarkable in that it will provide indisputable evidence for the ICC of war crimes that even identifies the individuals committing these crimes. It also will provide the Russian citizens proof of what is really happening. They then can either continue drinking vodka and pretend they are OK or take some positive actions to preserve what is left of Russia. President Biden has made some great moves here.
The best weapons used to be ink on paper; now its bits in cyberspace. I only see positive results here thanks to the Ukrainians and all the countries that are supporting them.
How Ukraine Is Crowdsourcing Digital Evidence of War Crimes
It's a systematic effort unlike any in the history of modern warfaretime.com
Unfortunately most Russians will never see any of the evidence. The few people who might see it are already against the war. 80% of Russians only get news from the controlled Russian media. In the rural areas there is little to no internet and all they have is state controlled TV.
Also all the documenting of the war crimes will probably come to nothing. The perpetrators in WW II were mostly brought to justice because the allies occupied all the axis countries. Nobody is going to occupy Russia. International indictments would prevent people from leaving the country, but that's about all it would accomplish.