Iran nuclear deal: US campaign mash-up
US presidential candidates have taken opposing sides over the deal allowing Iran to restart limited enriched uranium production.
Republicans are concerned about implications for national security, while Democrat Hillary Clinton remains confident that the best deal possible was struck.
The levels of enriched uranium Iran can produce would not be suitable for a bomb without further processing.
The US Congress is due to vote on the agreement.
Video journalists: Andrew Webb and Olivia Lace-Evans