In the waters of the Red Sea, a huge oil tanker has been sitting idle since the outbreak of the civil war in Yemen eight years ago.

Owned by Yemen’s national energy company, the slowly decaying boat became another casualty in a war that has pushed the country into humanitarian crisis.

But its cargo, a vast load of crude oil, set it up to be potentially the worst oil-related disaster in history – that is until a UN operation in August finally managed to transfer oil off the boat.

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