The Islamic Republic bears direct responsibility for the bloodshed, and its Supreme Leader is the principal accused. Opponents of the Islamic Republic can be divided into two groups. The national opposition adheres to three core principles: non-intervention by foreign powers, rejection of domestic tyranny, and a peaceful, democratic transition away from the Islamic Republic. According to the second type of opposition, the Islamic Republic must be overthrown at any cost—even through foreign intervention, and internal armed conflict. A referendum on the constitution of the future system must be held.