WASHINGTON, DC - MAY 16: National Security Advisor H.R. McMaster answers questions during a press briefing at the White House May 16, 2017 in Washington, DC. McMaster defended the President Donald Trump's decision to share intelligence with Russian Foreign Minister Sergey Lavrov and Russian Ambassador Sergey Kislyak during an Oval Office meeting last week. (Photo by Win McNamee/Getty Images)
A U.S. Soldier with Charlie Company, 1st Battalion, 17th Infantry Regiment walks to a joint district community center after securing combat outpost Rajankala in the Kandahar province of Afghanistan Nov. 26, 2009. (DoD photo by Tech. Sgt. Francisco V. Govea II, U.S. Air Force/Released)
TOPSHOT - This undated picture released from North Korea's official Korean Central News Agency (KCNA) on April 14, 2017 shows North Korean leader Kim Jong-Un (C) inspecting the "Dropping and Target-striking Contest of KPA Special Operation Forces - 2017" at an undisclosed location in North Korea.
North Korean leader Kim Jong-Un has overseen a special forces commando operation, state media said on April 13, as tensions soar with Washington over Pyongyang's nuclear programme. / 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. / (Photo credit should read STR/AFP/Getty Images)
