Overnight Defense: GOP senators rip Saudi prince after CIA briefing | Top general says Afghan war at a stalemate | Mattis extends border mission through January | Pompeo gives Russia deadline on nuclear arms treaty

THE TOPLINE: Senators emerged from a briefing with CIA Director Gina Haspel blaming Saudi Crown Prince Mohammed bin Salman for the death of U.S.-based journalist Jamal Khashoggi and promising further action."There's not a smoking gun,...