KABUL, Afghanistan – Afghans rioted for a second day Saturday to protest the burning of a Quran in Florida, killing nine people in Kandahar and injuring more than 80 in a wave of violence that underscored rising anti-foreign sentiment after nearly a decade of war. The desecration at a small U.S. church has outraged Muslims worldwide, and in Afghanistan it further strained ties with the West. On Friday, 11 people were killed, including seven foreign U.N. employees, in a protest in the northern city of Mazar-i-Sharif. The protests come at a critical juncture as the U.S.-led coalition gears up for...