In his introductory statement to the Board of Governors, Amano said, 'The additional protocol is a powerful verification tool and I have been calling for Iran to implement it since I took office nearly six years ago.'

The additional protocol will be implemented in Iran as it is in around 120 other countries which have already brought it into force, he said.

Under the JCPOA, Iran has agreed to implement extra nuclear-related commitments, which are known as transparency measures, Amano said, adding that these measures will help the Agency to have a better understanding of Iran’s nuclear program.

'On July 14th, I signed a road-map for the clarification of past and present outstanding issues regarding Iran’s nuclear program with Mr. Ali Akbar Salehi, Vice-President of Iran and President of the Atomic Energy Organization of Iran,' the IAEA chief said.

The purpose of the road-map is to accelerate and strengthen the cooperation and dialogue between the Agency and Iran with a view to resolving all outstanding issues by the end of 2015. It is part of the Framework for Cooperation agreed between Iran and the IAEA in November 2013, he added.

Amano said that as agreed in the road-map, Iran provided the Agency on August 15th with explanations in writing, and related documents, for the clarification of past and present outstanding issues.

'All activities under the road-map are to be completed by October 15th and I will present my final assessment to the Board by December 15th. As with all my reports, this assessment will be factual and impartial. In the meantime, I will provide regular updates to the Board on implementation of the road-map.'

'There is now a historic opportunity to resolve the Iran nuclear issue. I hope that full use will be made of this opportunity,' he said.