In the last 20 years, the number or Christian palestinians has shrunk--ditto for Lebanese Christians. Most have emigrated elsewhere. The Europeans in the Vatican bureaucracy blaims Israel rather than the Muslims.
And why? Because the Vatican (and perhaps orthodox Catholic theology) simply cannot deal with a restored Jewish state in 'Eretz Yisra'el. All the ancient liturgical churches believe in full-blown supercessionism, with the church being the "new Israel." In light of this they cannot look favorably on Israel and this is the source of most of the attitude, however rationalized otherwise.
Furthermore, it is a common claim among the ancient churches that the "palestinian" chr*stians are in fact the descendants of the very first Jewish chr*stians and that they have lived in Israel since the time of Chr*st. In fact the Romans exiled all Jews (including chr*stian Jews) from Israel after the Bar Kokhba' rebellion (132-35CE) and forbade them to return. The Romans then renamed the city Syria Aelia Capitalina and turned it into a pagan Hellenistic Roman city. Even when Rome converted to chr*stianity and turned Jerusalem into a chr*stian city Jews (including what was left of the original Jewish church) were still not allowed back into the city.
Arab chr*stians are Arabs. They are not Jews nor the descendants of a nonexistent Jewish chr*stian community that supposedly lived uninterrupted in Israel from the time of Chr*st until today. Many of them are probably descendants of the chr*stian Arabs the crusaders brought in to take the place of the moslems and Jews they had slaughtered.
The "indigenous" churches of the Middle East are the most anti-Semitic in the world, and they are "indigenous" and "third world" enough to slip under the radar screen of the liberal anti-Semite hunters, who prefer to attack white American churches they associate with domestic conservatism.
The Middle East Council of Churches recently declared that "Zionist chr*stianity is not chr*stianity at all." They're right. It would be a blessing from Heaven if our American Fundamentalists, whose chr*stianity comes from an uninterpreted composite Jewish/chr*stian Bible, would see that their religion is not chr*stianity and turn from that religion to the Torah as Noachides.
'Amein. Ken yehi ratzon.