Which European nation was the focus of a United States NATO and United Nations military mission designed to end the country's civil war and ethnic cleansing?

The European nation that was the focus of a United States NATO and United Nations military mission aimed at ending its civil war and ethnic cleansing is Bosnia and Herzegovina. The intervention, known as Operation Deliberate Force, took place in 1995 to address the humanitarian crisis and violence resulting from the Bosnian War. The mission contributed to the negotiation of the Dayton Agreement, which helped to establish peace in the region.