The UN nuclear monitoring agency will begin its annual general conference.
Representatives from the 151 member states of the International Atomic Energy Agency will meet for a week of talks in Vienna on September 20.
Reports says Israel's assumed nuclear arsenal will be debated, with Arab countries again proposing a resolution as they did last year demanding the Jewish state give up its alleged nuclear arsenal and sign up to the nuclear Non-Proliferation Treaty.
Backers of Israel, especially the United States, argue the resolution could jeopardize newly relaunched Middle East peace talks.
compiled from agency reports