TOKYO, JAPAN - SEPTEMBER 09 : Tomomi Inada, Defense Minister of Japan, speaks about North Korea Issue during a press conference in Tokyo, Japan, on September 9, 2016 as North Korea conducted its fifth nuclear test on Friday while improving its mobile ballistic missile technology. North Korea conducted a fifth ever nuclear test Friday morning, described by South Koreas Joint Chiefs of Staff as the reclusive states biggest-ever with a yield reaching 10 kilotons. (Photo by David Mareuil/Anadolu Agency/Getty Images)
