It comes a day after a United Nations resolution imposing sanctions on the government. David Waddell reports.
Russia's ambassador to the UN, Vitaly Churkin, said some of the wording of the resolution could have been made clearer.
US acting ambassador, Alejandro Wolff, said the UN expected Iran's 'full, unconditional and immediate compliance'.
Britain's ambassador to the UN, Sir Emyr Jones Parry, urged all nations to 'implement the resolution as fully as possible'.