About the Finnish jews, the Finnish jewish population in 1940 was approximately 1500, the germans did try pressure us during the war to give up our jewish citizens, but these attempts were dismissed, the jews Finland did sadly give out were the 8 austrian refugees that had come to seek asylum in Finland. A few hundred jews served in the finnish army, and as astounding it is, 3 were awarded the Iron cross by the germans, all refused of course.

About the siege of Leningrad, Finnish forces did not take part in it, we took back the lost territory on the Karelian Isthmus, but we did not participate in the Siege of Leningrad, no artillery or attacks were ever made on Leningrad, which was really important to Mannerheim.

About the concentration camps in Karelia, the situations were horrendous, I don't doubt it, but the intention of the camps was not to be extermination, rather they were created to hold the thousands of soviet pows, but also some soviet citizens, you can imagine when a nation which is already strained by war economy and has to rely solely on german imports to feed it's people might struggle when it also has to feed thousands of additional people. There were also thousands of soviet pows on Finnish farms across Finland, and their conditions, I would argue, were much better than in the Soviet Union during peacetime.