Negotiators for the Ugandan Lord's Resistance Army rebel movement have walked out of peace talks with the Ugandan government in south Sudan.
Millions have been displaced in the conflict
Talks broke down after the government refused the rebels' demands for cash and positions in government as a condition for disarming.
The government has given the LRA until 28 February to end the war.
Around 20 years of fighting with the LRA has killed tens of thousands of people and uprooted some two million.
"We flatly rejected LRA's demands for cabinet posts and cash rewards," government spokesman Captain Chris Magezi told Reuters on Thursday.
"When they saw they were not getting anything out of their tall orders, they walked out of the talks this evening."
LRA negotiator James Obita said the rebel delegates were "extremely angered", AFP reports.
"The government does not want to talk about the issue of inclusiveness and participation of the LRA in the national politics yet," Mr Obita told the news agency by telephone from Juba.
Earlier this week a government spokesman said he expected a deal "soon", after an agreement on a special court to try war crimes cases removed one of the previous obstacles to a settlement.
Three LRA leaders are wanted by the International Criminal Court.