A navy soldier (L) of People's Liberation Army (PLA) stands guard as Chinese citizens board the naval ship “Linyi” at a port in Aden, in this March 29, 2015 file photo. China has launched an unusual charm offensive to explain its first overseas naval base in Djibouti, seeking to assuage global concerns about military expansionism by portraying the move as Beijing's contribution to regional security and development. (Photo by Reuters/Stringer)
