Barney offered me the 5T, but as we were having a war with much higher stakes by that point, I didn't claim it. As for the how, there are still some available sploits that would become apparent with the information. As far as I've seen, no-one who worked out the method was underhand enough to push the sploits (at least on FB, I dont look elsewhere), this probably is why the info didn't become public yet.
Yes, treasurer's map was packed close enough to make the special forces redundant, but even if it wasn't, special forces are weak against an active president, as just about anything can kill them.
There was nothing stopping air attacks apart from a lack of things for me to attack with. As Treasurer said, he was faster off the draw as the bell rang and my ground attack country (the other 3 were defence-only) had minimal attack aircraft because I had rammed it with ground attack.