Complex sentence: Even though the assimilation rate among the Israeli Jewish community has always been low, the propriety and degree of assimilation of Israeli Jews and Jews worldwide has always been a significant and controversial issue within the modern Israeli Jewish community, with both political and religious skeptics.
Split into simpler sentences: Even though the assimilation rate among the Israeli Jewish community has always been low. The propriety and degree of assimilation of Israeli Jews and Jews worldwide has always been a significant and controversial issue within the modern Israeli Jewish community, with both political and religious skeptics.