ON SUNDAY, a failed asylum-seeker from Syria blew himself up and wounded 12 people after being turned away from an open-air music festival in southern Germany. It was the fourth attack to shake Germany in about 10 days. Earlier on Sunday, a Syrian asylum seeker killed a woman with a machete and injured two other people in Reutlingen; on Friday, an Iranian-German shot dead nine people in Munich before killing himself; and on July 18, a 17-year-old asylum-seeker attacked passengers on a train. Beijing Youth Daily commented on Monday:

Germany seems to have reached a tipping point in regards to its immigration and refugee policies.

In the wake of the attacks, German politicians, especially Chancellor Angela Merkel, may be forced to seriously reflect upon the country's security dilemma, and probably consider stricter controls on refugees.