The vigilance regarding Iran has been conducted for a very long time. It isn't as though we woke up one day with Israel threatening to bomb the nuclear facility. The efforts to stem all nuclear proliferation by Iran has been ongoing which leads to me believe there is a great deal Israel and the USA know about the potential for nuclear weapon capacity.
...Clinton vetoed a 1998 version of the bill that focused on missile proliferation to Iran because it required the imposition of sanctions on Russian entities unless the president determined that a waiver of sanctions was "essential" to U.S. national security. The administration argued that the legislation, the Iran Missile Proliferation Sanctions Act of 1998, would harm the administration's effort to garner Russian cooperation on a wide range of proliferation issues....
...Clinton vetoed a 1998 version of the bill that focused on missile proliferation to Iran because it required the imposition of sanctions on Russian entities unless the president determined that a waiver of sanctions was "essential" to U.S. national security. The administration argued that the legislation, the Iran Missile Proliferation Sanctions Act of 1998, would harm the administration's effort to garner Russian cooperation on a wide range of proliferation issues....
