in rio from the food, you can an unsteady world will be in one person's hands. rather in a certain sense have japan have nuclear weapons. cooper: saudi arabia nuclear weapons? trump: saudi arabia. absolutely. more countries with more nuclear weapons. hillary clinton knows that's the last thing we need. as secretary of state, she negotiated a reduction in nuclear weapons with russia and worked with both parties to get it passed. an unsteady world demands a very steady leader.