Of course Russia will roll in and "win" - they are one of the biggest armed countries in the world.
However what Russia has done is invade a country which hasn't been hostile to them, alas when Saddam invaded Kuwait.
They have broken every rule within the UN so sanctions and wrecking them financially will have to happen first. The Russians will be prepared for this surely though so what effect it has who knows. Then where does it stop, does Western europe and America form a coalition military wise (already NATO) as they did with Iraq in 1991 as surely invasions like this can't just happen without consequences. As soon as that happens Putin starts firing ICBM's towards us all then as he sees outside alliances attacking Russia.
The man is mad but he's doing it. He's called everyone's bluff, surely the Russian people don't want this.