Ukrainians and Russians: What's the difference between you guys?

guess it's similar to the difference between chinese-taiwanese. or irish-scottish

Same as the difference between a 49ers fan and a Dallas Cowboys fan. Same shit, different pile.

What'e the difference between Americans and Canadians?

Different ethnicities means different priorities, different histories, different beliefs and different behaviour.

Same as everyone else.

Russia has been a serial invader of Ukraine and every one of its neighbours for centuries. Imperialism is part and parcel of Russian national ideology.
Ukraine has invaded nobody. Ukraine simply wishes to be free of Russian influence since they have more cultural affinity with the west.
Russia is at war with all western, non Russian ideology.
Russia was a despotic monarchy
Ukraine had a representative democracy
Russia has an official State owned church that answers to the state
Ukraines church was independent of govt.

There is a world of difference.

Ethnic wars are wars of extermination.
Ethnic wars have no end since the one promoting them against others has no real limits to attacking other nations based on their ethnic differences either.
Basically invaders that celebrate invasion have no reason to stop other than lack of success.

Borders and nations exist to allow people of different beliefs their own freedoms and lives.
When an entity decides it can interfere in another countries internal events it's declared that only one priority is valid.
Russias been invading and suppressing it's neighbours for centuries and has participated in numerous extermination attempts.
That's why none of Russias neighbours have any love for Russia except for regimes which retain soviet priorities.
That's also why the so called Russian separatists still revere the soviet flag and history which granted them lordship over any non-Russia nation or nationality.