Well, that’s true, actually. Amano will never publish a report about America’s nuclear weapons (only 5,133 of them now, actually). He hasn’t said anything about Israel’s, Britain’s and France’s weapons of mass destruction either. And his report is largely based on information fed to him by Western intelligence agencies.
But apart from that, Amano is as impartial and free from US influence as you would expect a career Japanese diplomat to be. Only cynical people will see any resemblance to Colin Powell’s performance at the United Nations in 2003, when the US defense secretary held up a test tube and assured us all that Iraq really was working on germ warfare.