An unidentified International Atomic Energy Agency (IAEA) inspector disconnects the connections between the twin cascades for 20 percent uranium production at nuclear power plant of Natanz, some 300 kilometres south of Tehran on January, 20, 2014 as Iran halted production of 20 percent enriched uranium, marking the coming into force of an interim deal with world powers on its disputed nuclear program. - 

The news from the Tehran and the United Nations today is that Iran has stopped its most sensitive uranium enrichment work. It's part of a deal with world powers to ease worry about the country's nuclear program. It also clears the way for a partial lifting of sanctions. To hear more about this story from the BBC's Matthew Price, click the audio player above.