South Africa has the biggest captive big cat industry in the world and it is largely unregulated.
Captive breeding takes place in South Africa and no other country is permitted to export lion bones.
The Cecil movement didn't lead to any deep-seated changes as trophy hunting persists in many parts of Africa.
A stronger ban on lion trade by CITES would have helped to lessen some of the threats lions face but it would have not have protected the animals from sport hunting.
New research from Zambia's Luangwa Valley identifies reforms needed for lion trophy hunting.