Liking this so far! Just a quick note as I play: Looks like you can play a sigint card, and then undo last move, and repeatedly play it to get all the intel for free! After undoing the intel remains on the card. Same thing with Diplomacy - you can remove an enemy card, and then undo - the diplomacy card returns, but the enemy card is gone. Sometimes with EU Support too.. I'll note this seems to be inconsistent - I just played sigint and it now won't let me undo it.. So maybe this only works under certain conditions.
K I guess this is a general problem - was just able to use it with Harpoon ARMs and completely take out the black sea..
That said, even with some of the advantage from the glitch, having a hard time besting the computer at this!