I'm a sucker for their campaigns, will likely buy.

I really don't see the Halo comparison though, there's no sign of 'plasma'. It's closer in setting to MGS than Halo.

Judging by the scenes it wouldn't surprise me if the Iraqis or some other middle-east force in association with the Russians, has compromised all their UAVs and other US equipment. I'm thinking probably a man vs machine + terrorist element there while you're in the city areas then some horse-desert combat while you're chasing terrorists.