Negroponte is one of the all-time stand-up good guys. He's worked for Nixon, Reagan and the Bush. The left wing hates Negroponte. Why should we think that Negroponte's following assessment is wrong?
I don't know much about the guy, but when your boss asks for the material, I think his request should be honored...all the moreso when he's the President. Also, he could release some of the more "benign" material to get his critics off his back.