Can you do it in the long term?
Yes. Why not? Russia, allied with China is unbeatable economically, China, allied with Russia is unbeatable millitarily.
Really? Isn't Putin wanted by the ICC?
And the heck do care about ICC?
Russian oligarch's have had their assets seized.
Yachts and villas are not actually "assets". They, usually, don't generate money. It's more symbols of wealth, not the wealth itself. True wealth is, for example, land with all resources. And the real wealth is acquiring in former Ukraine. To say more - by stealing Russian property West is destroying the basis of its current wealth. Say, I have some property in Italy and in Japan. My property in Italy was "frozen", and after "warming" in Russian-Italian relationships I'm going to visit Italy, send this person to swim in concrete flippers, and took from his heirs at least double price. My property in Kioto wasn't frozen (even if Tokyo's regime tried to do it), and it still continue generate little but useful profit. So, those Japanese guys improved their reputation and I'll continue to work with them (and will invest more).
Following the invasion of Ukraine, many countries, particularly in Europe, have implemented travel restrictions for Russian citizens, including bans on entry for tourism or other non-essential purposes, and tightened visa requirements.
No problems. You should pay for privilege of inviting Russian tourists. For recreation proposes Maldives, Japan or China are not worse.
Do Ukrainians feel the same? I think not.
My Mom was Ukrainian, and it was she who told me this (same way feel my friends and relatives from Kherson, Mariupol and Odessa). The boss of my boss, born in a small village in Lvov region - think that Ukrainians are another ethnic group, but this difference isn't important.
As the costs continue to rise.
And profits are high, too.
No. After annexation of the whole Ukraine we'll have more soldiers than before it.
Are Ukrainians in their own country considered terrorists?
In fact, yes.
I think that would apply to the Russians.
From your point of view, say, Russian NRBC-expert, teaching carthel's militants to use biological weapons will definitely be a "terrorist".
Might become Russia's Afghanistan.
No. Things in Western Ukraine might get messy, but only if we don't normalise relationships with EU. And if we didn't normalise them, more likely there will be more problems with Spanish or German militants in Spain and Germany.