Can Europe Assimilate Islamic Immigrants?

Another powerful piece from NRO's Victor Davis Hanson, wrapped in a Tolkien metaphor. Hanson ponders the survival of Europe:

[Who] will soberly but firmly demand assimilation and integration of all immigrants, an end to mosque radicalism, even-handedness in the Middle East, no more subsidies to terrorists like Hamas, a toughness rather than opportunist profiteering with the likes of Assad and the Iranian theocracy — and make it clear that states that aid and abet terrorists in Europe due so to their great peril.

The evidence so far suggests not:

The Netherlands was a litmus test for Europe. Unlike Spain or Greece, which had historical grievances against Islam, the Dutch were the avatars of the new liberal Europe, without historical baggage. They were eager to unshackle Europe from the Church, from its class and gender constraints, and from any whiff of its racist or colonialist past. True, for a variety of reasons, Amsterdam may be a case study of how wrong Rousseau was about natural man, but for a Muslim immigrant the country was about as hospitable a foreign host as one can imagine. Thus, it was far safer for radical Islamic fascists to damn the West openly from a mosque in Rotterdam than for a moderate Christian to quietly worship in a church in Saudi Arabia, Iran, or Algeria. And yet we learn not just that the Netherlands has fostered a radical sect of Muslims who will kill and bomb, but, far more importantly, that they will do so after years of residency among, and indeed in utter contempt of, their Western hosts. . .

It is almost as if the killers in Amsterdam said, "I want your cell phones, unfettered Internet access, and free-spirited girls, but hate the very system that alone can create them all. So please let me stay here to destroy what I want."

If Muslim immigrants cannot become Muslim Europeans, or Europe cannot assimilate Muslim immigrants, doesn't that increase the risk calculus addressed earlier and at Winds of Change?