21 Menachem Av 5776
Most of the Torah and halachah that deals with the issue of non-Jews in Eretz Yisrael is for two reasons: 1) it is a foregone conclusion that Eretz Yisrael is where Jews should be living; and, 2) it's the only place where we have the mastery over our own will and laws.
What is the halachah for living among the non-Jews in the Diaspora? When we are living in their lands, we are their guests. It is up to us to steer clear of them - to be good citizens (as long as their laws do not conflict with God's law) and to try to keep ourselves and Judaism alive - to survive and not to assimilate, either their religion or their culture.
Orthodoxy has traditionally forbidden interfaith dialogue and interaction while the Heterodox movements embrace it. (That should tell you something right there.)
In the interests of truth, clarity and compliance with the Creator's will as expressed in His Holy Torah, here are some links to previously posted excerpts from Rabbi Kahane's Or HaRa'ayon: The Jewish Idea.
Some Halachot regarding non-Jews in Eretz Yisrael
Excerpts from The Non-Jew in Eretz Yisrael by Rabbi Meir Kahane
Torah perspective: They really must go – Rabbi Meir Kahane
Or HaRa'ayon, Vol II, Ch. 20 - The Non-Jew in Eretz Yisrael