I'm afraid that we will have such incidents much more in the Europe, unfortunately.
ISIS has indoctrinated many young Muslims in Europe with its ideology, and now this ''lonely wolves'' becomes a big security threat for all of us.
Also, some of their fighters are also coming back in Europe and it's impossible to control all of them.
This time we had a lot of luck because of the great courage of US Marines but what will happen next time?
Very dangerous times are coming for the whole of Europe.