Donald Trump has sued Rupert Murdoch and his media companies over a Wall Street Journal report on his ties to Jeffrey Epstein.

The network has sparingly covered the defamation lawsuit the president filed against its corporate sibling News Corp and the Wall Street Journal.

Rupert Murdoch called his son Lachlan a “principled leader” poised to navigate a changing media landscape as the 52-year-old executive and dealmaker took the helm at News Corp on Wednesday.

Rupert Murdoch, 92, will now be Chairman Emeritus of FOX Corporation. He assumed the same position at News Corp earlier this week, and Lachlan Murdoch is now the sole chairman of both companies.

Donald Trump and Rupert Murdoch have had a symbiotic relationship dating back almost 50 years. But could the president's lawsuit against the Wall Street Journal truly mark the end?