How to deal with the Islamist menace

Christopher Hitchens favorably reviews Mark Steyn's book, America Alone: The End of the World As We Know It and offers some suggestions of his own for dealing with the threat. I particularly liked this one:

An end to one-way multiculturalism and to the cultural masochism that goes with it. The Koran does not mandate the wearing of veils or genital mutilation, and until recently only those who apostasized from Islam faced the threat of punishment by death. Now, though, all manner of antisocial practices find themselves validated in the name of religion, and mullahs have begun to issue threats even against non-Muslims for criticism of Islam. This creeping Islamism must cease at once, and those responsible must feel the full weight of the law. Meanwhile, we should insist on reciprocity at all times. We should not allow a single Saudi dollar to pay for propaganda within the U.S., for example, until Saudi Arabia also permits Jewish and Christian and secular practices. No Wahhabi-printed Korans anywhere in our prison system. No Salafist imams in our armed forces.