Insurgents cut off Mali's fuel supply

The West African nation of Mali, one of the countries comprising the Sahel region to the south of the Sahara Desert, has been fighting extremists for years. But a coalition of al-Qaeda and ISIS fighters, known as JNIM, have begun blowing up oil-tankers en route by road from Senegal, the Ivory Coast and other countries. This could spell disaster for landlocked Mali, which depends on such imports. Similar fighting, political instability and a rejection of Western military assistance across the Sahel has people worried for the region. The World's Gerry Hadden reports.