At least 166 people have died in a wave of bitterly cold weather sweeping Afghanistan, an official said Saturday, as extreme conditions heaped misery on the poverty-stricken nation. Afghanistan has been frozen by temperatures as low as -33 degrees Celsius since January 10, combined with widespread snowfall, icy gales and regular electricity outages. Aid agencies had warned before the cold snap that more than half of Afghanistan’s 38 million people were facing hunger, while nearly four million children were suffering from malnutrition. The disaster management ministry said on Saturday the death…