Ah, that is an interesting idea, and worthy of more study.
I had always understood the Christian basis of friendship with the people of Israel was from Genesis 12:3, which suggests that those who "bless" the children of Abraham would be blessed.
I don't know much about it, but I think there's an old Christian prophecy about Jews dominating the Holy Land as one of several omens preceding the actual Apocalypse, the Second Coming of Christ. People who want the Apocalypse would presumably support Israel because if Jews lose control of the Holy Land, then we're not there yet.
it's true, i'm trying to remember. there's a couple things in the bible about Jews and some temples and some other things, that once built or once the right people have control then that marks the beginning of the second coming. ...something like that, i left Christianity a long time ago.