Currently you need Flash installed to play BATTLE FORCES.
Unfortunately most browsers do not include it by default.
Even worse, some browsers do not support it at all (like I think Chrome does not).
You might be able to install it for FireFox.
The Puffin Browser supports it by default last time I tried.
NAPs and Treaties
Personally, I believe there should be no guidelines for truces. A persons word is his bond, I had success in Battleforces by knowing who to trust, others who were sketchy, and new players who I kept my eye on. Made for more fun in my honest opinion. I enjoyed being dependable, therefore reputation ensured I had some early advantageous truces over other lesser known players. As we know from history there are nations, e.g. Hitler, who broke truces and it should be the same here.
Actually, you might want to think about setting all of the H2H games with a standard, as fair as possible, drop. I am playing an Indian Ocean game now where I started with a full $20 less in income and with India, all by itself, surrounded with my only other land territories being in Africa. If a new player got a drop like that it may very well send them running from the game, never to come back.
@phantom Thanks, I hope I can get back in the swing of things (I already missed my turns yesterday by mistake )