US ends waiver that allowed neighboring Iraq to buy electricity from Iranians; Tehran's top envoy Araghchi says talking with Britain, France, Germany, Russia and China instead

Iranian officials say they haven’t received any correspondence from Trump. This may be two sides talking at each other and both bluffing.

Iran's Supreme leader has criticised "bullying" countries in an apparent response to Donald Trump's comments that he had sent a letter to Iran demanding negotiations on its nuclear programme. Trump said on Friday he had warned Tehran in a letter it could face military action unless it agreed to talks for a nuclear deal.