ARI foreign policy expert Elan Journo writes today on The Hill:

The truck attack at a Christmas market in Berlin has cast a lurid spotlight on German authorities. The police apparently knew the suspect, had evidence of his ties to jihadists and believed he posed a threat.

Yet twelve people are now dead. Last August, we saw a truck used as a weapon of jihad in Nice, France, so why didn't police prevent this one?

Find out here.