Iran’s nuclear deal with world powers may hang in the balance, but you wouldn’t know it at the United Nations conference on atomic energy held Monday in the United Arab Emirates.

Iran decided to skip the Abu Dhabi conference, leaving its seats empty as Yukiya Amano, the head of the International Atomic Energy Agency, avoided speaking about the nuclear deal at all in his address at the venue.

Officials at the Atomic Energy Organization of Iran did not respond to a request for comment from The Associated Press. The semi-official Tasnim news agency quoted an anonymous source at the organization late Monday saying the delegation could not attend as the UAE did not grant them visas? Source.