Citing the need to protect intelligence sources, they declined to describe in any detail the evidence on which the American accusation and condemnation were based.
The American accusations, he said were "grave and inconsiderate."
Hence the Iranian government swings between defiance and a wounded tone in its response to the American accusations.
It is "political correctness," the current American accusation.
Last week the Japanese weariness with American accusations finally gave way to openly expressed anger.
American officials say it admitted its program early this month after initially denying the American accusations.
Chinese officials deny that their space program greatly depends on foreigners and tend to laugh off the American accusations.
They said the countries would discuss the American accusations at a regular meeting of their bilateral trade committee scheduled for September.
Perhaps the most detailed bit of evidence to back the American accusations was not even spelled out by the President.
Neither do the findings substantiate the American accusation of European corruption.