JUBA — Warring forces in South Sudan battled on Thursday, trading blame for breaking a ceasefire as the civil war entered its sixth month amid warnings of famine if bloodshed continues. Both sides reported heavy fighting in the key oil-producing state of Upper Nile, which now pumps almost all of South Sudan’s crude after intense battles shut down most fields in the other main area of Unity state. Both army spokesman Philip Aguer and his rebel counterpart Lul Ruai Koang reported heavy artillery barrages and fierce gun battles at Dolieb Hill, south of Upper Nile’s war-ravaged state capital Malakal, and in the northern Renk district. “We will continue to strictly abide by the peace agreement, but we will not allow this ceasefire to be used by rebels to continue moving and attacking our positions,” Aguer said. — AFP