Complex sentence: Yosef was a fiery figure in Israel's politics, as founder and spiritual leader of Israel's ultra-Orthodox Shas Party, which champions the interests of Jews originating from North Africa and the Middle East.
Split into simpler sentences: Yosef was a notable figure in Israel's politics, as founder and spiritual leader of Israel's ultra-Orthodox Shas Party. Shas champions the interests of Jews originating from North Africa and the Middle East.