Well, it would likely bring those into power whom we as the West do not want there, hawkish members of the vast Russian security apparatus for instance. Do not expect the economic-liberal faction inside the Russian political elite to succeed in a violent struggle for power. I think the world is better of with Putin than with a 'silovik' (term for members of the security apparatus) ruling Russia.
The worst outcome would be what was narrowly avoided in 1991 and 1993: anarchy in a country with a stockpile of several thousand nuclear warheads. Even the most hawkish hardliner in D.C. and Brussels should see that it cannot be the West's interest to 'put Russia on its knees'.
Bookmarks