belligerent

adj

1. Engaged in warfare, warring.
2. Eager to go to war, warlike.
3. Of or pertaining to war.
4. (broadly)Aggressively hostile, eager to fight.

   “And I think the facts are that Beijing is a belligerent bully jealous and envious of what Taiwan has accomplished- mainland China- that's what I get out of all of this.”

   “England were not allowed to give their chariot the momentum it had a week ago. It was stopped dead in its tracks by a belligerent Springboks defence that simply refused to yield.”

5. Acting violently towards others.
6. Uncooperative.

noun

1. A state or other armed participant in warfare

   “The UN sent a treaty proposal to the belligerents.”