Which political system is most accurately described by the following statements?

Statement 1: A government system led by a single leader who typically rises to power through force or charisma.

Statement 2: Emphasis on ultra-nationalism, authoritarianism, and a hierarchical structure within society.

Statement 3: The suppression of political opposition and strict control over media and information flow.

Statement 4: Policies often involve strong censorship, propaganda, and a centralized economy.