Memo to Europe: if you're not going to experience defeat by jihadists, the first step is to heed warnings

And these were pretty recent:

A Moroccan security official says that his country's intelligence service warned Germany twice about the risk posed by Anis Amri, the radical Muslim who slaughtered 12 people at a Christmas market in Berlin earlier this month.

The official, who spoke to Turkish newspaper Daily Sabah, says that the Germans received two written warnings, one on September 19 and the other on October 1, about Amri's radical Islamic beliefs. He explains:

Correspondence from the Moroccan security agencies had a clear warning about the Tunisian man's desire to carry out a terrorist act.

The whole matter of taking heed of the real jihadist threat is one front on which the difference between the two basic world views - left and right - plays itself out. There is the desire to see the world conform to one's fondest wishes for peace and fairness, and the willingness to squarely look at just what kind of world this is and always has been.