I presume that you are a follower of Replacement Theology. How is it that your belief is legitimate for foreign policy and theirs not? Also, what makes you think that Christians can only support Israel based on some eschatological belief. Isn’t that the hight of hubris, which puts you in bed with Abe Foxman?
“Replacement” would indicate a belief that the thing being “replaced” had any measure of validity in the first place.
I don’t believe that, so “replacement theology” would not be an accurate characterization.