unhcr.org/internally-displaced-people
Internally displaced people (IDPs) have not crossed a border to find safety. Unlike refugees, they are on the run at home.
IDPs stay within their own country and remain under the protection of its government, even if that government is the reason for their displacement. They often move to areas where it is difficult for us to deliver humanitarian assistance and as a result, these people are among the most vulnerable in the world.