Setting Questions:

[stg58fal]

Mercs or SF conducting a false-flag operation in a friendly country that wasn't quite friendly enough.

Alternately, they were operating with the permission of said .gov, either to rile up support for the war (when the attack was pinned on The Bad Guys), or to eliminate a Bad Guy cell that the friendly .gov COULDN'T take out for whatever reason (a PM/CONgressman/whatever was a member?).

In the campaign (T2013) I was running before life interfered, the PCs never got far enough to find this out but the war was basically started by one rich asshole who was in charge of a megacorp. Sort of like Clancy's "Rainbow Six", only instead of wanting to save the earth by wiping out people, he and his followers wanted the planet for themselves, with everyone else as their servants/slaves, amusement, and consumers of their products. If I was going to start a campaign set initially in Ireland or Australia, maybe the PC's would be part of a team investigating some of the goings-on of this megacorp. Rumors of human experimentation and such (which were true...I figured out a way to incorporate zombies into T2013, though they weren't truly undead, but people kidnapped by the corp and implanted with control devices in their brains).