Us? Who is "us"?
I don't remember Ukraine helping my country or some other that was completely leveled in bombarding during the war in 90s.
IF and only IF somebody has economic INTEREST, then they will help you. For my country, they had an interest, in leaving it being rubbished so they could install a cheap fake democracy ruled by oligarchs, favoritism, and bribery.
I didn't say Russia will not exist because of your country's conflicts or because somebody will do some war against them, I said it will not exist in general in its present form. And soon neither will Putin. Wait and see.
RE: There will be no military in 10 years to defend Europe against Russia