Trump sent a threatening message to Iran on twitter
    Trump tweeted that Iran "will suffer consequences the likes of which few throughout  history have ever suffered before" if it threatened the US.   Mr Rouhani earlier said that war with Iran would be "the mother of all wars".  In May, the US left a deal which curbed Iran's nuclear activities in return for the lifting of international sanctions.   President Rouhani's comments, made to Iranian diplomats, did leave open the possibility of future good relations with the US.   "America  should know that peace with Iran is the mother of all peace, and war  with Iran is the mother of all wars," he said, according to Iran's state  news agency Irna.  In a separate development on Sunday, US Secretary of State Mike  Pompeo said the Iranian regime "resembles the mafia more than a  government".   Addressing a group of Iranian Americans in  California, Mr Pompeo denounced Mr Rouhani and Iranian Foreign Minister  Javad Zarif, who negotiated the n...