From the publisher's website (www.terrorbullgames.co.uk):

"War on Terror is a devious and strategic game of global domination liberation. Everyone starts with a fledgling empire and the best intentions. Then things start to get cramped. You notice your neighbour has more oil than you. Tensions rise and before you know it, someone launches a pre-emptive strike. And that's usually when the terrorists start appearing ... "

In the second edition the rules have been tweaked, the box is slightly smaller, some new cards have been added, and the minimum number of players is now increased to three.