(3) demands that the President initiate an international effort to immediately and dramatically increase the economic, political, and diplomatic pressure on Iran to verifiably suspend its nuclear enrichment activities by, inter alia, prohibiting the export to Iran of all refined petroleum products; imposing stringent inspection requirements on all persons, vehicles, ships, planes, trains, and cargo entering or departing Iran; and prohibiting the international movement of all Iranian officials not involved in negotiating the suspension of Iran's nuclear program