Former adviser accuses Trump of being ungrateful in tweet after US president said he was ‘very disappointed’ in Tesla CEOTrump says he is ‘very disappointed’ in Elon Musk after attacks on tax billPresident Vladimir Putin told US 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.Trump said after a phone call with Putin on Wednesday that time was running out for Iran to make a decision on its nuclear programme and that he believed Putin agreed that the Islamic Republic should not