Your investigative superiors.
Here's the thing and I've said it before and I'll say it again.
Every single type of savage, barbarian attack that has been done to the Jews, mostly in Israel but not exclusively, will spread to the rest of the world.
The Jew-haters and appeasement weasels who don't care when it "just" happens to Jews will see that every kind of terrorist attack that has been done in and out of Israel, aimed at Jews, will happen to the non-Jewish, 'infidel' population in their own countries as well. There is no hiding from it.
Some people cried real tears, and some crocodile tears, for example, when Israeli teenagers were slaughtered in discos, in restaurants, when Israelis were blown up on buses, or standing at bus stops.
They took a cursory look at the headlines, and moved on.
Israel and the Jews are the testing ground for jihad. Non Jews and liberals of all persuasions and nationalities may not be at all interested in the jihad, but I can assure you, that it is quite interested in them.
So when we have "motive unclear" being uttered in an attack such as the most recent one in France, joining the ever so tired, standard lexicon ("lone wolf", "mentally ill"), you better believe that the jihad is empowered and things are going to get much worse before they ever start to get better. Vehicular jihad has now been exported from the Palestinians to the Western world, joining suicide bombings and beheadings, 'honour' murders and other jihadist specialties.
I'm not entirely sure when anyone of consequence will begin to care.