The U.S. President has taken a firm stance against Iran, promising tough sanctions against the country over claims it was plotting to kill the Saudi ambassador to Washington. Two Iranians were charged with trying to hire members of a Mexican drug cartel to carry out the attack - something Tehran has dismissed as baseless. But Barack Obama says there's enough evidence of Iran's guilt and is calling on the international community to make it 'pay for its behavior' by further isolating Tehran. The U.S. is now considering sanctions on Iran's Сentral Bank, promising even more pressure. Professor Seyed Mohammad Marandi from the University of Tehran says Iran will deal with any pressure.