It's been two years since the World Health Organisation declared the outbreak of the Ebola virus in west Africa a global health emergency. For Liberian police commissioner, Gregory Buster Coleman, the virus presented a huge challenge. He had to try to maintain order amongst the chaos in the capital Monrovia whilst also keeping himself and his officers safe - but it wasn't the first time in his life he'd faced difficulty. As a child he'd lived through Liberia's devastating civil war, which eventually forced his family to become refugees in neighbouring Ivory Coast. He tells Matthew Bannister his journey from child refugee to police commissioner - and eventually, a Harvard graduate.

Image: Liberian police commissioner Gregory Buster Coleman