Both Kiir and Machar are under pressure to release a timetable for presidential elections in 2023. While Kiir expresses hope that a vote can be held next year, Machar has said that elections are impossible amid such widespread insecurity.
In recent days the violence has been worst in the president’s home state of Warrap, where victims include a military intelligence chief and a former government commissioner.
“We have lost many lives in communal violence," Kiir said in a speech in early July, noting the killings in Warrap's Tonj North county, where gunmen killed 30 soldiers on June 25.
The Tonj North clashes erupted after authorities there sent security forces to recover cattle stolen by raiders from another county. In other cases, deadly skirmishes have been triggered by efforts to disarm youths.
“I deeply regretted their death,” Kiir said of the people killed in Warrap. "We cannot allow this senseless killing of both security personnel and civilians to continue.”
Killings also have been reported in the Western Equatoria, Eastern Equatoria and Central Equatoria states, the president said, acknowledging that peace gains since 2018 have been eroded by what officials describe as inter-communal violence.
Following the killings in Warrap, Kiir's army chief, Gen. Santino Deng Wol, vowed to defeat ethnic militias in comments to state broadcaster SSBC. “We are responsible for the security of the country," he said. "We will not allow chaos to happen, and we would not allow anyone to disturb the security.”
But some analysts say government troops and police — often outnumbered by civilian attackers in areas awash with small weapons — can't be relied on to protect civilians. They also charge that the attackers have powerful political backers in Juba.
“The armed youth in Tonj North are more powerful than our army and other security institutions,” said Edmund Yakani, head of the CEPO group tracking violence. The violence is “undermining the genuine implementation” of the peace agreement, he said.
It also is hindering humanitarian efforts among communities in urgent need of food, medicine and other supplies.
“The scale of sub-national conflict — which now spreads from north to south, from east to west — is alarming,” Nicholas Haysom, the U.N. representative to South Sudan, told the Security Council last month.
More than 80% of civilian casualties this year are “attributed to intercommunal violence and community-based militias,” he said. “This violence divides communities and hampers reconciliation.”
There were high hopes when oil-rich South Sudan gained independence from Sudan in 2011 after a long conflict. But the country slid into civil war in December 2013 largely based on ethnic divisions when forces loyal to Kiir battled those supporting Machar. Tens of thousands of people were killed in the war, which ended with the 2018 peace agreement. But the terms of that accord have not been fully implemented, and persistent violence is weakening it even more.
A panel of U.N. experts in May said the 2018 agreement is faltering. The deal “is now hostage to the political calculations of the country’s military and security elites, who use a combination of violence, misappropriated public resources and patronage to pursue their own narrow interests,” said the report.
Others in South Sudan express similar alarm.
“The country is breaking into pieces," said James Akot, a political science scholar in Juba. “The country is breaking into community defense forces that can actually overpower our army soon.”