Do you know what the United Nations is? It's like a big group of countries from all around the world who want to work together to make things better for everyone.
Now, some of those countries are in a place called West Africa and the Sahel. That's an area in Africa that includes countries like Mauritania, Mali, Niger, Nigeria, and others.
And because those countries are part of the United Nations, there's a special office that helps them work together on things like peace and security, promoting human rights, helping refugees, and improving the economy.
This office is called the United Nations Office for West Africa and the Sahel (UNOWAS). It's like a helper that helps the countries figure out how to solve problems and work together to make things better for everyone.