MALAKAL, South Sudan (AP) — Behind barbed wire fencing Peter Tap cuts a forlorn figure, one of 27,000 South Sudanese seeking safety at a United Nations base in an area that has suffered some of the country’s worst violence since mid-December.

These South Sudanese feel it is too dangerous to return to their homes, despite a truce between the warring factions. Their fear highlights the danger of renewed violence as both sides trade blame for sporadic violations of a ceasefire agreement signed last week in neighboring Ethiopia.