Garry Kasparov has retired his men to take on Vladimir Putin:

Garry Kasparov, the world's top chess player for two decades and considered by many the greatest player in history, has announced his retirement from professional chess in an ambitious gambit and vowed to devote his energy to battling what he called the "dictatorship" of President Vladimir Putin.

No word on just how he plans to do that, but I'm interested to find out. (link via ALDaily)