With the Treaty of Brest-Litovsk, Russia, not very pleased with it, had to accept the independence of Finland, while Estonia and Poland were countries that they had to give up to Germany and Austria-Hungary. Not very happy about it, but the Russians were not in a position to keep these territories, as well as few others that they lost, but when the World War II came, they returned to invade this territories again, and in general succeeded.
