A super tanker anchored off the coast of Yemen and containing more than a million barrels of oil is "likely to sink or explode at any moment", unleashing an environmental and humanitarian disaster, a United Nations official has told Sky News. Nature Sustainability predicts that within three weeks an unabated oil spill could kill almost all of Yemen's Red Sea fishing stock, upending the lives of millions of people living in coastal communities who rely on the ocean for their food and livelihoods. "I know if there was an oil spill, there would be tens of millions of dollars pouring in to solve this spill