Ban Ki-moon
UN peacekeepers are accused of failing to respond to an attack on a Juba hotel by uniformed men who killed a journalist and raped several civilians.
More than two dozen children were also wounded in the attack.
The coalition was responsible for 60 percent of child deaths and injuries last year, killing 510 and wounding 667.
Heads of state from some of the world's richest and most powerful countries were nowhere to be seen.
WHAT'S HAPPENING
Only Italy, Sweden and the United States immediately announced concrete plans to play a part.
Commonwealth officials are not happy about a legal brief the U.S. filed in a little-noticed Supreme Court case.
The resolution makes no mention of the future role of Syrian President Bashar Assad.
The next few days will decide the planet's future.
His surprise visit "reflects the sense of global alarm at the dangerous escalation in violence" there, he said.