President Trump will meet with Russian President Vladimir Putin and Chinese President Xi Jinping at the G-20 summit in Japan next month. The meeting comes amid an escalation of what author Jim Sciutto calls a new type of warfare. Sciutto, CNN’s chief national security correspondent and anchor, joins “CBS This Morning” to discuss his new book, "The Shadow War: Inside Russia's and China's Secret Operations to Defeat America." It highlights tactics he says both countries use to attack the U.S.