How did a 'cocktail of violence' engulf Mozambique’s gemstone El Dorado?

Clashes between Isis-linked militants, government troops and mercenaries have displaced 200,000 in mineral-rich Cabo Delgado

For decades a forgotten corner of Mozambique, Cabo Delgado has now become the country's El Dorado, promising billions in natural gas and gemstones but delivering its population only violence and displacement.

An insurgency in the province now threatens to become further entrenched - 50,000 people have fled their homes since March and Mozambique's neighbours are currently debating sending in regional forces to help defeat militants who seized a strategic port in the town of Mocimboa da Praia last month.