The War on Terror is, to a large extent, about creating a domestic counter-insurgence apparatus in the US. Perhaps there are changes coming that necessitate, from the perspective of those in power, this level of control over the population.
If they could pull off 9/11, I'm sure they can do that again with domestic "enemy". But then what's the purpose? Why to do that? Usually, not to loose power. But they are in the power all the time anyway (military/industrial complex). So, what gives?