Days ahead of the meeting of the IAEA Board of Governors, India will brief the 35 nations who are part of the board as well as the Nuclear Suppliers' Group (NSG) countries in a joint session. Foreign secretary Shiv Shankar Menon will brief the 35 members of the apex body of the UN atomic watchdog on the Safeguards Agreement and other aspects related to the Indo-US nuclear deal on Friday in Vienna. NSG countries, who are not members of the Board, will also be briefed on the issue in the same session. The special briefing for the IAEA Board members has been organised to enable India to apprise the important countries about India's case in the backdrop of the Indo-US nuclear agreement, officials said. Among the 35 members of the IAEA Board, 26 are NSG countries, but the remaining NSG countries have also been invited for the special briefing, considering that the India has to seek a waiver from the 45-nation grouping after the Safeguards Agreement is approved by the IAEA Board. R B Grover, Secretary in the Department of Atomic Energy, will accompany Menon to Vienna for the briefing. Earlier, India had decided to brief all the 140 members of the IAEA but the plan has now been "re-structured' as it was considered unnecessary since the Safeguards Agreement is to be approved only by the 35-nation Board. The IAEA Board of Governors will meet on August 1 to consider the Safeguards Agreement initialled on July 1.