TEHRAN (Tasnim) The chairman of the Iranian Parliaments National Security and Foreign Policy Commission warned that countries exploiting Irans goodwill for dialogue and resorting to pressure will face a tougher and more decisive response than ever. Dialogue is not an endless concession, he warned, stressing that those who pursue pressure must be prepared for a harsher and more decisive Iranian response. His warning came after the United Nations Security Council voted not to permanently lift economic sanctions on Iran under Resolution 2231. Nine UNSC members voted against sanctions relief the US, Britain, France, Sierra Leone, Slovenia, Denmark, Greece, Panama, and Somalia. The vote follows a 30-day process launched in late August by the UK, France and Germany, known as the EU3.