The UN Security Council unanimously voted Saturday to impose new sanctions against Iran for its refusal to stop enriching uranium - a move intended to show Tehran that defiance will leave it increasingly isolated. Iranian Foreign Minister Manouchehr Mottaki rejected the sanctions and said Iran had no intention of suspending its enrichment program. "The world must know - and it does - that even the harshest political and economic sanctions or other threats are far too weak to coerce the Iranian nation to retreat from their legal and legitimate demands," Mottaki told the Security Council after the vote. "Suspension is neither an option nor a solution." The moderately tougher sanctions include banning Iranian arms exports, and freezing the assets of 28 people and organizations involved in Iran's nuclear and missile programs.