The lines are growing at Russian gas stations -- and so is the frustration and uncertainty as several months of Ukrainian attacks have set oil refineries ablaze and choked supplies for motorists across the vast country. Fuel rationing has been introduced in many regions, with hourslong queues of cars snaking beside roads. Social media videos show drivers aghast at the lines or swearing at empty gas pumps and rising prices. The mayor of the Siberian city of Irkutsk even ordered portable toilets brought in to accommodate those in line.