(AFP) – A quarter of a million children face starvation in war-torn South Sudan, with an end to the 18-month conflict as distant as ever, the expelled UN aid chief warned Tuesday. “Six months ago, we thought that violence and suffering had peaked and that peace was on the horizon. We were wrong,” said Toby Lanzer, who was barred from the country earlier this month after warning of economic meltdown. “Political intransigence left peace ever more distant; war raged on and is leading to economic collapse.”