Iran is set to breach the 2015 nuclear deal for a second time in as many weeks as it ramps up its demands for sanctions relief.
The country broke a key limit set by the nuclear deal for the first time days ago, stockpiling more low-enriched uranium than it is allowed to. Now, Tehran is vowing to follow through Sunday on its threat to increase the level of enrichment of its uranium — a more serious breach that some experts say will bring Iran closer to obtaining a nuclear weapon.
The moves are adding volatility to an already precarious situation in the Middle East, where U.S.-Iran tensions remain at a fever pitch.
Here are five things to know about Iran’s breaches of the nuclear deal.