From Molotovīs speech after Winter War:
The war in Finland took a big toll both on us and the Finns. According to estimates of our General Staff, the number of those fallen and fatally wounded is on our side 48,745, thus somewhat less than 49,000 persons and the number of the wounded is 158,863 persons. On the Finnish side efforts are made to diminish the number of their victims, but their casualties are far bigger than ours. According to the most cautious calculations by our General Staff the number of those fallen is at least 60 thousand, not counting the fatally wounded, and the number of the wounded is at least 250,000. When you start from the fact that the number of the Finnish army has been at least 600 thousand men, you have to draw a conclusion that the Finnish army lost half its ranks as killed or wounded.
Such are the facts.
Molotov's speech after Finnish Winter War@Everything2.com