belligerent

US /bəˈlɪdʒ.ɚ.ənt/
UK /bəˈlɪdʒ.ɚ.ənt/
1.

wishing to fight or argue:

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a belligerent person
1.

a country, group, or person who is fighting a war:

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Many hoped the belligerents were finally on the road to peace.