suspected nuclear sites. after new commercial satellite imagery showed heavy construction equipment including bulldozers. the president dismissed the fact that iran can hide nuclear material. nuclear material is not something you hide in a closet. it can leave a trace for years. the bottom line is if iran cheats we can catch them and we will. reporter: a senior intelligence official tells cnn the iae aechld the international agency responsible for inspecting the nuclear sites is familiar with sanization efforts and the international community has confident in the iaea s technical expertise. many lawmakers, republicans and democrats are not convinced. they take issue with the fact that details have not released details and will not confirm if