Germany has been rocked by a series of attacks since July 18. The last one, on Sunday, involved a Syrian immigrant who detonated a bomb, killing himself and injuring 15 people in Ansbach. Last Friday, a teenager shot and killed nine people in Munich. On July 18, five were wounded on a train in Wuerzburg by an axe-wielding teenager from Afghanistan. On July 24, a 21-year-old refugee from Syria killed a woman with a machete and injured five more.
