"Children as young as one being raped by armed men should shock anyone to their core and compel immediate action," UNICEF Executive Director Catherine Russell said in a statement sent to journalists.

Civilians sheltering in the vast Zamzam displacement camp in Sudan’s North Darfur region are now “nearly impossible” to reach, the UN’s top aid official in the country warned on Thursday.

The sanctions were imposed after fresh reports of horrific abuses in the African country, notably a UN report that documented the rape of hundreds of children by armed men