Iran’s constitutional watchdog has ratified legislation banning access to military sites and scientists as Tehran and world powers approach a deadline for reaching a comprehensive nuclear deal.

State TV says the Guardian Council ratified the bill Wednesday. All bills have to be approved by the council to become a law.

The bill would allow for international inspections of Iranian nuclear sites within the framework of the Nuclear Non-proliferation Treaty.

Iran and a six-nation group – the U.S., Britain, France, Russia, China and Germany – face a self-imposed June 30 deadline to reach a final deal that would curb Iran’s nuclear activities in exchange for sanctions relief.

(AP)