African Leaders Express Sympathy For Victims Of The Manchester Attack

British Prime Minister Theresa May says security services know who carried out the 'callous' bombing at Manchester Arena; UN mission in Darfur warns fighting between Sudanese government forces and fighters from the Darfuri rebel group the Sudan Liberation Movement is a setback to peace efforts in the region; and health ministers in Geneva discuss plans for improving access to anti-retroviral treatment for people with HIV in Central and West Africa.

(Photo: Emergency response vehicles are parked at the scene of a suspected terrorist attack during a pop concert by US star Ariana Grande in Manchester, northwest England. Credit: Paul Ellis / AFP / Getty Images)