Well, I cannot prove that the U.S. government is not lying. In fact, it would be impossible.
As you know the government is an amalgamation of tens of thousands of people, so I'm not sure what you are driving at.
I'm more than willing to have a conversion with you; however, I'm unclear about your position, then. I assumed, may be incorrectly, that you're claiming this attack was perpetrated by the U.S. government.
I can give you my opinion on the pages you state, but it's just that, an opinion.