Conquest of Russia

There are several misconceptions regarding historical conquests of Russia.
The idea that both Hitler a Napoleon were foolish for attacking Russia during winter is a misconception. Both attacks were in June and according to their plans were supposed to be done before winter, but these plans failed because of poor predictions and unanticipated events.
The idea that Russia cannot be conquered is also wrong. Below are a few historical events disproving this misconception (although some people are coping argue that these don't count):
* The Mongols invaded Russia in winter quite successfully in the 13th century. If anything, the winter aided them. The mongols and their horses were used to winter cold plus cold weather helped turn frozen rivers into highways. The Russians tended to campaign in the spring and summer and were unprepared for the Mongol invasion.
* The Poles invaded in beginning of the 17th century. The Poles captured Moscow but were eventually driven out (they just kind of left).