Complex sentence: On the other hand, he expressed the repentance for his past support of prosecution of Ukrainian national churches, the Autocephalous and Greek Catholic, and currently leads the drive for his church to become a single Ukrainian national church.
Split into simpler sentences: On the other hand, he expressed the repentance for his past support of prosecution of Ukrainian national churches, the Autocephalous and the Greek Catholic. He currently leads the drive for his church to become a single Ukrainian national church.