A deal lifting economic sanctions on Iran - in relation to nuclear activity has been described as "historic".

The move follows confirmation by the United Nations' atomic watchdog that Iran's nuclear programme has been scaled down and isn't a threat - so it'll now be able to access billions worth of frozen assets.

The announcement came hours after the US and Iran reached an agreement on a prisoner swap.

The US Secretary of State John Kerry says despite the doubters, Iran has shown it can stick to its promises: