Complex sentence: Until 2012, the ideology of the community had been Judeo-Christian dialogue in uncondional solidarity with Israel no-matter-what, in which there was no place for indigenous Christian Palestinian Arabs, not to mention for Muslims.
Split into simpler sentences: Until 2012, the ideology of the community had been Judeo-Christian dialogue in uncondional solidarity with Israel, right or wrong. This dialogue left no room for indigenous Christian Palestinian Arabs, not to mention for Muslims.