So stable it has multiple ongoing civil conflicts. Come visit Russia, we didn’t shoot down any airliners this year!
By all definitions it's Ukraine in the state of civil war, not Russia. More than 90% of Donbas rebels are Ukrainian citizens. Russia of course supports the pro-Russian side in this conflict, but foreign interference during civil wars is so common, you could call it a rule.
And even outside the war zone you can see a strong polarization in Ukrainian society (just look at the recent news about an attempted murder of an opposition party member by far-right nationalists), with nothing comparable in Russia.
Can you mention one?