But if the material is there or is stored, it will not send a signature. It will not leave fingerprints and that will be difficult to detect through technical means. We will have to rely on human intelligence.
It is essential that we take steps to eliminate both access to and production of material for nuclear weapons.
We have not seen diversion of nuclear material for weapons purposes, but the picture is still hazy and not very clear.
If there is minor omission and this is clearly not intentional we are not running to the Security Council to say that it's a material breach.