A spate of clashes involving Government security forces and insurgent groups in northeast Nigeria has caused mass displacement and threatened humanitarian assistance, as armed groups go “house-to-house” hunting for aid workers, the UN said on Friday.

The grass beneath our feet: Why rangelands matter
Former rebel fighters join campaign against Ebola in the DR Congo
900 obstacles and counting: West Bank families trapped as aid access shrinks
‘Ebola is winning’: Epidemic now killing one person every 30 minutes
‘Warned but not protected’: Four in ten adults in England ignore heat alerts
Meth trafficking across Middle East becoming more advanced, UNODC warns