In this week’s news highlights: Eritrean-Ethiopian border reopens at two points; former Eritrean minister publishes accusatory book; campaign to protest large-scale disappearances in Eritrea; dozens of migrant child slaves freed in Sudan; South Sudan goverment and rebels sign “final” peace agreement; Sudanese president to form new leaner government; hostilities continue in Libya; Juncker proposes to upgrade Frontex, tighten asylum rules; more migrants die on sea after crackdown on NGO rescue missions; UN to investigate attacks on migrants in Italy and Austria