Very good question. I have been looking at various responses to this on twitter and other media and there seems to be a split in opinion. Many US based sites and blogs seem to suggest the French and UK are making this up to support their warmongering arguments. There seems to be large skepticism around this from the US so either they don’t want to believe the evidence or will wait until they can produce some of their own. Either they are trying to avoid another ‘sexed up’ dossier situation or are being deliberately obstructive. I’ll let others decide on that!