US President Donald Trump briefly laid out his case for a possible attack on Iran in his State of the Union speech to Congress on Tuesday, saying he would not allow the world’s biggest sponsor of terrorism to have a nuclear weapon.“The (Iranian) regime and its murderous proxies have spread nothing but terrorism and death and hate,” the Republican president said in his annual address. He accused Iran of restarting its nuclear programme, working to build missiles that would be capable of reaching the US and of being responsible for roadside bombings that have killed US service members and civilians.Iran pushed back against Trump’s pressure tactics ahead of critical talks in Geneva, alternating between calling his remarks “big lies” to saying negotiations might yield an talks through “honourable diplomacy”. Meanwhile, the US Treasury Department imposed new Iran-related sanctions on 30 individuals, several entities and tankers.