Israel PM Benjamin Netanyahu says the Iran nuclear deal is a bad mistake of historic proportions.


Iran and six major powers have reached a historic nuclear deal, which will grant Tehran sanctions relief in exchange for curbs on its nuclear programme.


The nuclear agreement included a compromise between Washington and Tehran that would allow UN inspectors to press for visits to Iranian military sites as part of their monitoring duties.


But access at will to any site would not necessarily be granted and even if so, could be delayed, a condition that critics of the deal are sure to seize on as possibly giving Tehran time to cover any sign of non-compliance with its commitments.


Under the deal, Tehran would have the right to challenge the UN request and an arbitration board composed of Iran and the six world powers that negotiated with it would have to decide on the issue.


Still, such an arrangement would be a notable departure from assertions by top Iranian officials that their country would never allow the UN's International Atomic Energy Agency into such sites.


Iran has argued that such visits by the IAEA would be a cover for spying on its military secrets.


This morning, the European Union announced that the final plenary of Iran and the six countries negotiating with it will take place at 10:30 Vienna time, followed by a news conference.