Belligerence (noun)

The state or quality of being aggressively hostile or combative.

Origin:

Belligerent + -ence.

Examples:

1. The belligerence of the crowd made the situation worse.
2. His belligerence towards the other team was not appropriate.
3. The country's belligerence towards its neighbor is causing tension.
4. The soldier's belligerence towards his commanding officer was out of line.
5. The child's belligerence towards his parents was a sign of his unhappiness.