Complex sentence: Later he parted ways with Mustafa Kemal, not in full agreement with the new direction young Republic was taken, opposed the immense power given to Ataturk by the parliament, feared he was going to be a dictator.
Split into simpler sentences: Later he parted ways with Mustafa Kemal, disagreeing with the new direction young Republic was taken. He opposed the power given to Ataturk by the parliament, fearing he was going to be a dictator.