“I remain hopeful,” Kerry told reporters as he left his Vienna hotel this morning.
“We had a very good meeting. Positive. I think we’re getting to some real decisions…we have a few tough things to do,' he added.
According to US media reports, Kerry attended a church service in the Austrian capital earlier this morning.
Iran and six world powers (the US, Russia, China, France, Britain andGermany) are inching towards a historic nuclear deal.