It's not rocket science. Physical assets. All of them.
Every country, especially USA, if there is Russian owned property, it's not theirs anymore. Every holding company or if some oligarch is dumb enough to have something in their name.
Lots of penthouses in NYC and Florida. Seize them all.
Sell them and pay for the funerals of all the innocent people that are about to needlessly, pointlessly, brutally die in fear.
Would you risk seizing private property of a Russian citizen, if Russia decides to retaliate by destroying property of a US citizen, wherever in the world it may be located?
Let's please not further escalate, it's time for diplomacy. Diplomacy means agreement, agreement means compromise. We may not be fully satisfied, the other side may also not be satisfied, but we'll both claim a diplomatic win for our side and go on with life. If the alternative is war and mutual destruction, it's the only reasonable way to go.
Russia isn't leaving Ukraine and they had no right to go in and start killing people.
Diplomacy is before war. Not after a country invades. After they invade you have to make sure they not only stop but never do it again.
If we aren't willing/able to put boots on the ground then any US assets in Russia have to be sacrificed.
If Russia pulls this off without a scratch, next up will be North Korea or China because why not? What is the US/Europe going to do?
No imports, no exports, no travel, no Olympics, nothing. They are a rogue nation acting like a bully and they now have isolated themselves until they leave Ukraine.
Of course there is diplomacy after the war is started and during the war. It’s the only way to achieve any peace barring a total defeat of one side, which didn’t happen in last 75 years.
Heck, it was diplomacy that allowed US troops to pull out of Afghanistan orderly, without diplomacy there would be a bunch of dead soldiers.
I bet millions of Vietnamese, Iraqis and whole bunch of others are already enjoying a windfall.
I don't expect "boots on the ground" because I wouldn't want to send anyone to their death even if they are young and ignorant so willing to do so.
But hell, the least we can do is make Russia disappear from everything else and close down their world. No travel, no assets outside of Russia to any other country.
They aren't China, we can do that to Russia. China would be a nightmare but not Russia.
They aren't leaving Ukraine ever. Are all the events and cancellations just waiting for things to "shake out"? It's basically forever. Or at least Putin's lifetime but who know who is waiting in the wings.