Germany’s problems with integrating immigrants date back to before the refugee crisis.
Instead of seeking to blame immigrants or Islamic State, Europeans need to rise to the challenge posed by the modern world.
Rule one: don't lose 'ownership' of the issue.
Europe's biggest achievements, such as open borders and human rights, are at risk as government responses to the refugee crisis fall short.
The experience and situation of many of the refugees precludes successful treatment of PTSD due to the nature of the disorder and what it requires to ease.
The attacks in Paris are putting refugees in the crosshairs, yet it's the integration of these and past migrants that are key to the security of Europe.
In the years following the end of World War II, Germany took in between 12 and 14 million refugees. What lessons does this past disaster have for today's Europe?