Under a deal signed in May, President Salva Kiir and former vice president Riek Machar were due to establish a unity government by August 10.
However Sunday's deadline came and went with no sign of progress on a dead aimed at ending brutal fighting in the region.
In a strongly worded statement, Secretary of State John Kerry yesterday accused both sides of failing to commit to the peace process, and urged regional African groupings to intervene.
"Deadlines keep passing and innocent people keep dying," Kerry said. "The log-rolling and delay has to end.
"This is an outrage and an insult to the people of South Sudan," Kerry said.
"Their leaders are letting them down again and again. Peace talks have been on-going in Ethiopia for six months, while the people of South Sudan continue to suffer and the war persists."
Thousands have been killed and more than 1.5 million have fled after seven months of fighting between government troops, mutinous soldiers and ragtag militia forces divided by tribe.
Kerry condemned fighting in the northern Maban region which left six aid workers dead and forced the United Nations to pull out more than 200 workers supporting some 127,000 Sudanese refugees.
Kerry noted regional leaders had previously threatened punitive measures if the parties failed to reach a peace agreement.
"I call on IGAD and the African Union to immediately take appropriate action to bring peace to the people of South Sudan," he said. "We're well past the point where enough is enough.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
