The U.S. may have a particularly bad problem with mass shootings, but it’s hardly the only country struggling to prevent them. On Tuesday, Russia experienced one of the deadliest shootings in the last three years. Authorities say a 19-year-old gunman opened fire in a school in Kazan, a city about 450 miles east of Moscow, killing nine people, including seven eighth-graders, and wounding over 20 individuals.
