US President Donald Trump listen as Japanese Prime Minister Shinzo Abe (out of frame) speaks at Trump's Mar-a-Lago resort in Palm Beach, Florida, on February 11, 2017, after North Korea reportedly fired a ballistic missile, the first since Donald Trump became US president. / AFP / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
An US sailor raises the US flag on the USNS Safeguard as the USS Chung Hoon (in background) is also anchored at Tien Sa port in the central city of Da Nang on July 15, 2011. The port call by USSs Chung Hoon and Preble and USNS Safeguard is part of planned naval exchange activities between US and Vietnamese navies taking place amid high tensions over conflicting claims in the South China Sea. AFP PHOTO/HOANG DINH Nam (Photo credit should read HOANG DINH NAM/AFP/Getty Images)
