The world’s most powerful media mogul — and, indirectly, assignment editor — is rallying the troops to look skeptically at Gen. David Petraeus’ startling announcement today that he’s resigning as director of the CIA due to an extra-marital affair. “Petraeus resignation. Timing, everything suspicious,” Rupert Murdoch posted this afternoon on Twitter. “There has to be more to this story.” Last week The Wall Street Journal challenged the CIA and Petraeus’ handling of the September attack on the U.S. embassy in Benghazi that resulted in the death of Ambassador Christopher Stevens and three other Americans. Other Murdoch-owned outlets including the New York Post and Fox News have prominently reported criticisms of the way the administration handled events in Libya.

Murdoch also vigorously opposed President Obama in the campaign leading up to this week’s election. But he seemed to soften immediately after Mitt Romney’s loss. “Well, we are where we are. Same dangers ahead-Iran, fiscal cliff, inflation, maybe unmanageable debt, etc. Country 50-50, must compromise,” Murdoch wrote on Wednesday. Yesterday he was back in attack mode, tweeting that Secretary of State Hillary Clinton will “spend most of next week in Australia, while O hides Iran attack on drone until after election. What next?”