On the face of it, conversion to Islam would appear to provide a painless escape device for any hostage who happens to fall into fundamentalist terrorist hands. After all, once free, the hostage can always revert to his real faith or non-faith. It is hard to blame the two Fox News journalists, the American Steve Centanni, 60, and the New Zealander, Olaf Wiig, 36, for taking that path on to buy their way out of an uncertain fate at the hands of Palestinian terrorists – especially as they later reported they were forced to make the gesture at gunpoint. And,...