Complex sentence: In 2013, Kim re-established his grandfather's style when he made his first New Year's address, which was a break from the approach of his father, who never made televised addresses during his 17 years in power.
Split into simpler sentences: In 2013, Kim re-established his grandfather's style when he made his first New Year's address, a break from the approach of his father. Kim Jong-il never made televised addresses during his 17 years in power.