The US has approved legislation to impose sanctions on foreign companies that help supply fuel to Iran, a move Washington believes will stop Iran's nuclear programme. Iran is the world's fifth-largest oil exporter, but lacks sufficient refining capacity to meet domestic fuel needs, forcing it to import up to 40 per cent of its gasoline consumption. Tehran says it is not bothered by the sanctions and it will look elsewhere. As if to make a point of its defiance, Iran has test fired one of it is longer-range missiles. Nazanin Sadri reports.