What is the fine-grained topic of the following text: The U.N. Security Council agreed in August last year to deploy the so-called regional protection force of 4,000 extra peacekeepers, mostly from Rwanda and Ethiopia, after renewed fighting broke out between troops loyal to Kiir and those backing former Vice President Riek Machar. Only return the topic.
Deployment of extra peacekeepers by U.N. Security Council in response to renewed fighting in South Sudan