Sources say allowing Russian, Chinese and European companies to work at Arak and Fordow facilities will aid non-proliferation efforts

Tehran developing ability to accurately hit anywhere in Mideast, prime minister warns visiting US Treasury Secretary Steven Mnuchin, who vows more economic sanctions on Iranians

As Iranians breach nuclear deal in protest of US sanctions, British embassy says 'we are upholding our obligations to cooperate' with Tehran on modernizing Arak facility

US president confirms Washington, Tehran officials considered a meeting in New York last week, says he balked when Iranian president demanded sanctions relief first

Iranian supreme leader doesn't specify what additional steps Tehran ma take to violate accord, says US 'maximum pressure' campaign has failed

Iranian president says he was willing to accept European framework that included lifting sanctions, but then US leader publicly declared he would increase them

As tensions rise between Tehran and Washington, Trump says his forces are 'locked and loaded'

Foreign ministry spokesman adds he believes such an event is unlikely amid Washington's 'economic terrorism'

US president said to be considering French proposal for line of credit guaranteed by future oil sales

Tehran's ambassador to International Atomic Energy Agency says efforts to coerce monitor group will be counterproductive to Iranian cooperation