I am sorry I have ADD who the Hell is Christoff?
Nicholas Kristoff writes for the NYT. He wrote a column in May of 2003 setting forth Joe Wilson's claims and has written at least one column since making the same claims, even though they have been debunked. He is as dishonest as the paper he writes for.
http://en.wikipedia.org/wiki/Nicholas_D._Kristof
EXCERPT
Early in May of 2003, Kristof spoke to Joseph Wilson about the reliability of documents claiming that Iraq had tried to obtain uranium from Niger. The New York Times of 6 May 2003 published an oped by Kristof suggesting that, "a former U.S. ambassador to Africa was dispatched to Niger. In February 2002, according to someone present at the meetings, that envoy reported to the C.I.A. and State Department that the information was unequivocally wrong and that the documents had been forged."[1] This article by Kristof was mentioned in the federal indictment of Lewis Libby as a contributing factor in Libby's effort in May 2003 to learn about Joseph Wilson's trip to Niger[2].
Kristoff along with Pincus were the first to write on the Plame debacle (never heard that right?), their source was guess who?