I've been trying to beat the single player crazy level recently. I've gotten to the point where I hold Africa, Antarctica, South America, and Australia, not to mention most of Europe and a couple bonuses in Asia. I had also killed the bonus in Greenland and Indonesia. One enemy completely eliminated. Game sounds like it's about wrapped up right? Well then three of my enemies start pulling 30s 40s and even 50s along my border. How is that possible? I have a large income at this point, but I can't sustain that for more than a few turns. Even if one enemy have everything that's left, he shouldn't be getting that many troops. So is this level glitched or even impossible? Maybe just for me lol.

https://www.youtube.com/watch?v=2LnTptJr5Iw