Anderson Cooper 360

Pelosi Walks Out Of WH Meeting After Dem Leaders Says Pres. Trump Had A "Meltdown", Was "Insulting" To The Speaker; Dem Leaders: Pres. Trump Had A "Meltdown", Called Pelosi A "Third-Grade Politician" During Meeting; Dem Leaders: Pres. Trump Called Gen. Mattis "The World's Most Overrated General" In Meeting; Sen. Graham: "He's Making The Biggest Mistake Of His Presidency"; WH Statement: Pres. Trump Was "Measured, Factual And Decisive," Calls Speaker Pelosi's Walk Out "Baffling"; Dem Leaders: Pres. Trump Had A "Meltdown", Called Speaker Pelosi's Walk Out "Baffling"; Pres. Trump Tells Turkey's President "Don't Be A Tough Guy. Don't Be A Fool!"; Sen. Menendez: "Belligerent" President Trump Fumed In Syria Meeting, Called Former Defense Secretary Mattis "Overrate" And "Weak"; Sources: Federal Investigation Of Giuliani Includes Counterintellige