Two military geniuses with a united people behind them:
http://www.youtube.com/watch?v=lwKYqSyoopw
http://www.youtube.com/watch?v=24gQKRF9aJ0
Chuck XII was a military tactical genius. Strategically and politically he was an idiot.
A lot of things explain Russian backwardness better than his attacks, which affected relatively small areas of the Russian homeland.