Burundi's President Pierre Nkurunziza addresses the gathering after a new constitution adopted by referendum was signed in Bugendana, Burundi, on June 7, 2018. PHOTO | AFP
What you need to know:
Dr Walter Kazadi Mulombo who was the WHO boss in Bujumbura and his three colleagues were declared persona non-grata and given up to May 15 to leave the country.
