Dana Peterson, Citi Global Economist, says in respect to the trade war between the U.S. and China, the damage to the global economy has already been done. Esther George, Kansas City Fed President, joins Bloomberg's Michael McKee at Jackson Hole and says she is not ready to provide more policy accommodation. Robert Hormats, Kissinger Vice Chair & former Goldman Sachs International Vice-Chair, says a resolution to Brexit would ease volatility. And Brian Wieser, GroupM President, discusses ad business in the streaming age.