The United Nations is warning an unstable political environment and a growing humanitarian crisis are pushing the Central African Republic to the brink of collapse. Conditions have worsened in the C.A.R. since Seleka rebels ousted President François Bozizé four months ago. In a briefing to the Security Council, top U.N. officials warned that international support is direly needed.

Lt. Gen. Babacar Gaye: “As there is no proper chain of command, the country runs the risk of descending into anarchy and chaos. Some police officers are reporting to work, but are not equipped to work safely and effectively.”

Valerie Amos, emergency relief coordinator: “Much more international support is required to meet growing needs. Critical sectors, such as water, sanitation and hygiene, have received less than 10 percent of the funding required.”

The African Union’s peacekeeping force for the Central African Republic has asked the United Nations for greater assistance to fulfill its mandate.