un is useless, especially has been since mainland china got the China seat at the table.
By design what force it has, is from poor countries funded by rich countries.
The Un peacekeepers commit almost as many atrocities as the people they are supposed to be keeping the peace from.
Nation building is a huge cluster, the few places it has worked is more due to the local population than anything.
I heard that it started with people protesting against the "president" of country in huge volumes and the leaders of country had first agreed to speak with protesters leaders, but then had ordered attack to protesters camps and violence has been continuing since then. I don't think if there is lot that countries outside will do other than condemn it.