Official to try to deescalate rising tensions after Macron and Rouhani agreed on July 15 deadline to solve current impasse

Germany, UK and France react hesitantly to Tehran announcement that says it will break limits on uranium enrichment after Netanyahu urges swift action to combat 'dangerous steps'

PM compares Tehran's violation of 2015 deal to Nazis' 1936 occupation of Rhineland, urges European countries to intervene and impose sanctions

French president Macron tells Iranian counterpart by phone that he is concerned about weakening of nuclear deal; Tehran says it will up enrichment level

Tehran's UN envoy says even if Islamic Republic violates key provision of 2015 pact, it could reverse move quickly; up to Europe to show 'tangible results'

Meeting with world leaders will give Trump chance to articulate strategy for containing Iran to skeptical international community

Anonymous diplomats say Tehran will not cross threshold on Thursday as Islamic Republic claimed, but with production rate of roughly a kilo a day, will get there in coming days

Amid Iranian threats to violate the international agreement, Tehran's envoy says accord's other signatories must compensate his country

German Chancellor says EU countries still hoping for political solution after downing of American drone; UK official heading to Tehran

Sapling publicly planted by the men in Washington was whisked into mandatory quarantine -- where, much like the relationship between the two leaders, it did not survive