Fox News remains a reliable supporter of the president, but the mogul’s WSJ has taken on Trump, triggering a legal battle.

President Donald Trump, 79, speculated on Tuesday whether Wall Street Journal owner Rupert Murdoch, 94, actually controlled the newspaper—one day after he demanded the 94-year-old be deposed in the $10 billion lawsuit he’s bringing against the paper.

President Trump wants an expedited deposition from Rupert Murdoch as part of his lawsuit against Murdoch and the Wall Street Journal over the alleged Epstein letter.