A day of politics and power played out across screens, courtrooms, and markets. Anderson Cooper’s emotional farewell to “60 Minutes” closed a two-decade run with a pointed tribute to the show’s independence, even as he said family and the strain of juggling CNN and CBS drove his exit. In Washington, Donald Trump moved to drop his $10 billion lawsuit against the IRS over leaked tax records, a step that appears to clear the way for a settlement. Abroad, tensions sharpened dramatically as Cuba warned of a “bloodbath” if attacked, while the U.S. sanctioned Cuban intelligence officials over claims Havana has acquired drones with possible Russian and Iranian backing. Trump also rattled global markets by telling Iran the “clock is ticking,” sending oil higher and stocks lower on fears of renewed instability. Meanwhile, Congo’s worsening Ebola outbreak added another layer of international urgency.