Shamaila Khan, the director of emerging market debt at AllianceBernstein, discusses the sanctions on Venezuela that the Trump administration unveiled today, potential impact on the country's debt, and China's involvement in the debt. Bloomberg Gadfly columnists Shira Ovide and Sarah Halzack talk about Amazon quickly using its ruthless playbook to cut prices at Whole Foods and the logistical challenges ahead for Amazon's grocery business. Shunondo Basu, a meteorologist and gas analyst for Bloomberg New Energy Finance, talks about Hurricane Harvey and its effect on the energy industry. Finally, David Ader, the chief macro strategist for Informa Financial Intelligence, discusses market uncertainty, the outlook for bond yields and current investment strategy.