This picture taken and released on July 4, 2017 by North Korea's official Korean Central News Agency (KCNA) shows the test-fire of the intercontinental ballistic missile Hwasong-14 at an undisclosed location. North Korea declared on July 4 it had successfully tested its first intercontinental ballistic missile -- a watershed moment in its push to develop a nuclear weapon capable of hitting the mainland United States. / AFP PHOTO / KCNA VIA KNS / STR / South Korea OUT / REPUBLIC OF KOREA OUT ---EDITORS NOTE--- RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO/KCNA VIA KNS" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS THIS PICTURE WAS MADE AVAILABLE BY A THIRD PARTY. AFP CAN NOT INDEPENDENTLY VERIFY THE AUTHENTICITY, LOCATION, DATE AND CONTENT OF THIS IMAGE. THIS PHOTO IS DISTRIBUTED EXACTLY AS RECEIVED BY AFP. / STR/AFP/Getty Images
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How advanced is North Korea's nuke program?
01:26 - Source: CNN
CNN  — 

With his jaw set and his arms crossed, Donald Trump delivered the most incendiary public threat by an American president in many decades.