AP, Vienna, March 7, 2010 – The head of the U.N. nuclear watchdog agency says he cannot guarantee that Iran is not trying to develop atomic arms.

Yukiya Amano, who heads the International Atomic Energy Agency, says he cannot give Iran’s nuclear program a clean bill of health because Tehran is refusing to cooperate with an IAEA probe of its programs.

Amano also says Syria is stonewalling an investigation of a site suspected to have been a secretly built reactor that would have produced plutonium once finished. Israeli warplanes destroyed that structure three years ago.

Amano spoke Monday at the start of a 35-nation IAEA board meeting.