IAEA Director General Rafael Grossi has declined to assess what impact a potential resolution against Iran could have, saying his mission with Tehran will continue regardless of the outcome. The United States, Britain, France and Germany are seeking a resolution at the International Atomic Energy Agency’s Board of Governors that could refer Iran to the UN Security Council for the first time in two decades, as per reports.

Iran is the only country to enrich uranium to 60% without making a bomb, and the IAEA calls that stockpile “a matter of serious concern”.

VIENNA/PARIS — The United States, Britain, France and Germany are seeking a resolution by the U.N. nuclear watchdog's board next week reporting Ira...