I've noticed something about stealth... when you buy the Passport from the soldier in the first map... and not go around slaughtering all the Dictator troops at first sight...
You can travel around, freely. As long as noone sees you with a weapon.
Is it possible to stealth kill all Dictator troops this way in a map? Without making em hostile? Either way, gonna try it myself.
Someone else posted that they've used the pass to go straight to the Dictator's palace, but he wasn't able to find the Dictator in there. Maybe you'll have different luck. Let us know how it goes.
I can't seem to resist the urge to blow things up to use the pass much. [:D]