Do No Harm is a concept in humanitarian action that encourages aid deliverers to examine how their aid might reinforce and support conflict. 

The idea is encapsulated in Mary B. Anderson’s 1999 book of the same name where the author cites an example of a situation where aid may have caused harm taking place in Sudan.

In the example, an aid agency responds to a factional split by building two health facilities, rather than continuing with their original plan for one. An aid worker later realizes that this decision reinforced the conflict, brought twice as many resources into the area,