Iran is preparing a counter-proposal after rejecting the U.S. nuclear deal, prompting President Trump to caution that "time is running out."

President Vladimir Putin told U.S. President Donald Trump that he was ready to use Russia's close partnership with Iran to help with negotiations over Iran's nuclear programme, the Kremlin said on Thursday.

As I prepared to take a photograph of an anti-American mural outside of the former U.S. Embassy in Iran’s capital recently, a passerby called out to me.