David Cameron also urged world powers to fulfil their part of agreement . Iranians celebrated breakthrough deal that promises to end sanctions . Hassan Rouhani said : ' I believe this is a great deal and a strong deal ' Aims to stop Iran making a nuclear weapon in return for sanction relief .
Hassan Rouhani also urged world powers to fulfil their part of agreement . Iranians celebrated breakthrough deal that promises to end sanctions . David Cameron said : ' I believe this is a great deal and a strong deal ' Aims to stop Iran making a nuclear weapon in return for sanction relief .