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The toughest sanctions are no good if not enforced: Tufts University's Sung-Yoon Lee

1:08 PM ET Fri, 15 Sept 2017

Meredith Sumpter, Eurasia Group Asia director; Sung-Yoon Lee, Tufts University Korean studies professor; and Anthony Ruggiero, former Treasury Department deputy director, discuss the impact of sanctions on North Korea after the country launched another missile over Japan.