(Logically, he ("The Antichrist") has to be Jewish. It doesn't matter what the Muslims think.)

I can't buy that. Could you envision the Arabs accepting a covenant offered by a Jew? Without a covenant including a section that allows Israel to build on the Temple Mount, the likelihood of it happening is zero. Israel has essentially given control of the Mount to the "Palestinians", and Jews aren't allowed to walk on it.

I see war breaking out between Israel and the Arabs, with the AC stepping in to mediate a cease-fire and propose a compact that will be satisfying to both sides. No Jew or Muslim could accomplish it. And the settlement will be political, not religious.

Whatever the AC is actually is, I don't expect to be here to find out. ("Because of the Rapture")