A Jew who converted to Islam? Okay, I have heard deerything now.
Schwartz/Ahmad's background is non-religious Jewish AND Christian.He became a Sufi muslim under the influence of "Bosnia" and the Albanians; he's sort of a "human rightser" muslim.
See http://www.islamicpluralism.org/articles/2005a/vibesinterview.htm
So he represents an extreme form of the "Three Abrahamic faiths" movement. Other members of that movement are soft on radical islam and tend both to be anti-Israel and against authentic Christianity, which sees the Incarnatiion as God's unique way of saving the world and uniting our humanity in the life of the Trinity.
However, very few Jewish or Christian members of the "Three Abrahamic faiths" movement convert to islam--not even horrible "human rightsers" like James Carroll. And Schwartz/Ahmad is a muslim with a visceral hatred of Orthodox Christianity, and who spews propaganda for Balkan jihad, "Greater Albania", and "Bosnian" subversion of Europe and beyond.