As summary executions, abductions, torture and sexual violence plague el-Obeid, Sudan, the UN's human rights chief said the world must take action to stop preventable atrocities.

The emergency session follows warnings that 500,000 civilians around el-Obeid are at risk of large-scale atrocities.

Global Briefing: El-Obeid is facing drone attacks from the paramilitary Rapid Support Forces that have hit civilian targets and public utilities