Macbeth is not only a tragedy of ambition. It is also a deeply political play about kingship, legitimacy, tyranny, treason, rebellion and the collapse of order. Shakespeare shows what happens when private ambition attacks public authority.
Political questions are typical of Renaissance drama, especially because monarchy was associated with inheritance, providence and divine right. In this vision of the world, the king is not merely a political leader. He is part of a sacred order. Therefore, to murder a rightful monarch is not simply to commit a crime. It is to wound the entire structure of society.
At the beginning of the play, Scotland has a legitimate king. By the middle, it has a usurper. By the end, it needs political restoration. The movement of the play is therefore political as well as psychological: Macbeth’s inner corruption becomes a national disaster.
This is why the political questions in Macbeth matter so much. Shakespeare does not simply ask whether Macbeth wants power. He asks what power becomes when it loses legitimacy, morality and public trust.