Sorry to say this, but Jews in France, Belgium, and other European countries, should emigrate NOW—because
the next clash in the Middle East will almost certainly result in
mob attacks against them in European cities.
Every large European city has a muslim ghetto; and the police are likely to be “slow” to respond, and the governments, attempting to curry favor with Middle Eastern governments (or avoid attacks themselves by giving in to the bullies)
will probably blame the Jews for stirring up the hatred against them.
Indeed. Jews need to leave to save themselves. The obvious problem is that it is not so easy to do. Imagine growing up in (fill in the country) and that the primary language that person speaks is that country's language, the primary source of income is tied to the place that person lives. Their kids, their schools, their friends are all connected to that country.
Jews are leaving these countries in larger numbers, but it will take much more convulsion in their world to push more to run from their homes.