I have brought this up before. But i like to repeat myself. In the Eastern front at fall 1941. If the Finish forces would have cutted the Murmansk Railroad that was the main supply line for the American supplies that basicly kept Russia alive for the Winter 1941 and until fall 1942. I believe the Soviet Union would have grumbled. Also Finland could have helped in the attack against Russia´s second largest city and the home of the communist revolution Leningrad, but didnt fire a single artillery shell in the city. At the winter 1941 the only supply line to Leningrad was the Ice road over Lake Ladoga,which was under the Finish artillery range,but again Finish troops didnt attack a single time against the supply colums. The falling of Leningrad would have been catastrophy to SU. We have to remember that 1/4 of the Whole German armies at the Russia were at the Army group North. If these forces could have been pointed towards Moscow on spring 1942. I dont believe that the defenders of the city could have had much chances.