A Yemeni motorcyclist rides past burning tires in a street during a protest against inflation and the rise of living costs in the southwestern Yemeni city of Taez on Oct. 2, 2018. The UN Office for the Coordination of Humanitarian Affairs  warned last month that the currency depreciation was likely to make another 3.5 million Yemenis food insecure, in addition to 8.4 million people who already need emergency food assistance. 