Despite his saintly ways and the intense loyalty he evokes in men like Macduff, his kingdom is a shambles of social upheaval, teetering on the brink of collapse - the first act establishes a Scotland on the brink of social implosion, threatened by both internal division (Macdonald and Cawdor) as well as external invasion (the Norwegian army). Additionally, the fact that Macbeth can, and clearly has in the past, envisioned regicide as a stepping stone to individual advancement is worrying.