[Snipey]

Once again, that was during the first two months of it being established. In the end, Leningrad had a population of 640,000, that were supplied. In addition, you have to keep in mind that the Red Army couldn't devote all of their resources to the Siege of Leningrad, like they could to the path to Kabul. In addition, if they could supply 640,000 in Leningrad, that would be above the requirements of supply needed to carry out the operations in Afghanistan. And that was done with limited resources, which were much less than the resources the USSR had when the Red Army invaded Kabul. In other words, the USSR could have pulled it off, but didn't because of Brezhnev and Gorbachev, which was my initial point. So let's not go off topic, and focus on the task at hand.