Iran 's foreign minister says Iran retains the right to nuclear technology . But it does not retain the right to enrich uranium , Secretary of State John Kerry says . The deal includes substantial limitations to prevent the proliferation of nuclear weapons , Obama says . A senior administration official told CNN that in the months leading up to the Geneva talks , U.S. and Iranian officials held private , previously unknown discussions to generate ideas for the wider P5+1 negotiations . The statement follows marathon talks that continued into early Sunday morning .
Iran 's foreign minister says Iran retains the right to nuclear technology . But it does not retain the right to enrich uranium , Secretary of State John Kerry says . The deal includes substantial limitations to prevent the proliferation of nuclear weapons , Obama says . The statement follows marathon talks that continued into early Sunday morning .