Complex sentence: The resulting controversy expanded beyond Cruz and some commentators believe has resulted in the conservative movement becoming divided between those who sided with Cruz and Israel, and those who sided with Middle Eastern Christians and argued that Cruz's comments were out-of-bounds.
Split into simpler sentences: The resulting controversy expanded beyond Cruz and some commentators believe has resulted in the conservative movement becoming divided over Israel and Middle Eastern Christians. Conservative commentators became divided between those who sided with Cruz and Israel, and those who sided with Middle Eastern Christians and argued that Cruz's comments were out-of-bounds.