VIENNA — Pressure mounted on Iran to agree a UN-brokered nuclear deal Friday after Russia approved a proposal under which it would enrich uranium for the Islamic Republic. Friday is the deadline for Iran to agree to a deal, drafted by the International Atomic Energy Agency after talks between France, Iran, Russia and the United States this week, aimed at breaking the seven-year deadlock on the Iran's suspect nuclear programme. Russia was the first of the four countries to formally back the proposal. "We agree with these proposals," Foreign Minister Sergei Lavrov told a news conference in Moscow. And diplomats...