palaces, communication centers and other administrative buildings that Colonel Qaddafi relies on to maintain power.
http://www.nytimes.com/2011/05/01/world/africa/01libya.html?_r=1&pagewanted=2

So then the targeting of pentagon, whitehouse were ok, because they are C&C centers?

And the WTC was just industrial bombing, yawn, WWII stuff in the financial-information age.