This week's decision by the United Nations Security Council to establish a tribunal for prosecuting those responsible for the assassination of former Prime Minister Rafik Hariri, has been greeted with cheers and fears. Lebanon's current US-backed Prime Minister, Fouad Siniora, asked the UN to step in after the country's opposition-aligned parliament speaker refused to convene a session to ratify the creation of a tribunal. The UN's intervention has raised hopes for justice, fears about fresh violence, and has been condemned by militants. Michael Young is opinion editor of Lebanon's Daily Star.