UN's Ban says `onus' on Iran to dispel suspicions

U.N. Secretary-General Ban Ki-moon says the "onus" is on Iran to clear up suspicions that its nuclear program is aimed at building atomic weapons.

Ban has called on Iran to comply fully with U.N. Security Council resolutions demanding that it halt its uranium enrichment program. He was speaking Monday at the start of a monthlong conference reviewing the Nuclear Nonproliferation Treaty.

Ban has spoken at the 189-nation conference before Iranian President Mahmound Ahmadinejad is to take the podium. Ahmadinejad is the only head of state participating in the conference.