Haldenwang “warned against an increasing threat posed by the return of ‘Islamic State’ (IS) jihadis from Syria and northern Iraq.”

Why were they let back in? Because they’re German citizens, and the Merkel government is not in the least concerned about the fact that they joined an entity that is avowedly at war with Germany and has repeatedly called for attacks on German civilians.

Haldenwang also “admitted that it is not possible for authorities to monitor all terror suspects.”

That has been the Islamic State’s strategy all along: to overwhelm Western law enforcement and intelligence agencies until they collapse, as I detailed in The Complete Infidel’s Guide to ISIS. And it’s working beautifully.

“IS can still launch attacks in Germany: intelligence chief,” by Shamil Shams, DW, April 14, 2019 (thanks to The Religion of Peace):

The head of Germany’s domestic intelligence agency has warned against underestimating the threat posed by “Islamic State” despite the militant group’s apparent defeat in Syria and northern Iraq. In an interview with German newspaper Welt am Sonntag, Thomas Haldenwang, the head of the Federal Office for the Protection of the Constitution (BfV) — Germany’s domestic intelligence agency — warned against an increasing threat posed by the return of “Islamic State” (IS) jihadis from Syria and northern Iraq. Haldenwang said that the number of radical Islamists in Germany rose to 2,240 in 2018. “I cannot give an all-clear on IS,” Haldenwang said. “It can launch an attack in Germany anytime,” he added. The BfV president said that IS still exists with a focus on the “virtual cyber caliphate” that can still attract collaborators for attacks. Haldenwang, however, admitted that it is not possible for authorities to monitor all terror suspects. “We’ll need at least four people to monitor one such person. We are only focusing on those who could be extremely dangerous.”… Haldenwang also stressed that Germany had to “pay more attention to far-right extremism.”…

Of course. Priorities are priorities.