The Obama administration has found that traces of man-made uranium discovered at the Parchin military base in Iran by the International Atomic Energy Agency (IAEA) in 2015 were consistent with evidence linking the site to Iran's past nuclear weapons program.  Administration officials said that the finding did not change the conclusion of the U.S. intelligence community that Iran had halted its nuclear weapon development efforts in 2003.  The two particles of uranium were discovered during an IAEA inspection of the military site last year--a visit that Iranian officials said would not be repeated.