NEW : News agency : U.N. plans `` missile exercises '' Head of U.S. 's atomic energy program says Islamic Revolutionary Guard Corps experts can inspect plant . Iran told IAEA there is no nuclear material at the site , U.N. spokesman says . The country 's Islamic Revolutionary Guard Corps said it is planning to stage `` massive missile exercises '' or war games on Sunday to promote the armed forces ' `` deterrent power , '' the semi-official Fars News Agency reported . Iran has known about unfinished site since Bush administration , officials say .
NEW : News agency : U.N. plans `` missile exercises '' Head of U.S. 's atomic energy program says Islamic Revolutionary Guard Corps experts can inspect plant . Iran told IAEA there is no nuclear material at the site , U.N. spokesman says . Iran has known about unfinished site since Bush administration , officials say .