peacekeeping

From peace +‎ keeping, after keep the peace.

• (UK) IPA^(key): /ˈpiːskiːpɪŋ/

peacekeeping (usually uncountable, plural peacekeepings)

1. The act of preserving peace, specifically between hostile groups or states, especially by a sanctioned military force. [from 17th c.]
   • 2011, Steven Pinker, The Better Angels of Our Nature, Penguin, published 2012, page 378:

     Peacekeeping is one of the things that the United Nations, for all its foibles, does well.

2. (as a noun modifier) (for example) a peacekeeping force.

• peacekeeper