U.S. National Security Adviser McMaster speaks with an aide on the tarmac as he arrives with U.S. President Trump at Osan Air Base

U.S. National Security Adviser McMaster speaks with an aide on the tarmac as he arrives with U.S. President Trump at Osan Air Base

US National Security Adviser H R McMaster speaks with an aide as he arrives with President Donald Trump at Osan Air Base, South Korea. Reuters / Jonathan Ernst

December 5, 2017 5:44 AM (UTC+8)