News / Asia

    No 'Smoking Gun' from Last Month's North Korea Nuclear Test

    Screen grab shows North Korean leader Kim Jong-Un (C) pointing to a South Korean island during a trip to an artillery unit on Wolnae Island near the disputed maritime frontier with South Korea, March 12, 2012.
    Screen grab shows North Korean leader Kim Jong-Un (C) pointing to a South Korean island during a trip to an artillery unit on Wolnae Island near the disputed maritime frontier with South Korea, March 12, 2012.
    Reuters
    A month after North Korea's nuclear test, a monitoring agency said on Tuesday it was highly unlikely to find any "smoking gun" radioactive traces from the blast, potentially leaving key questions about the device unresolved.

    The lack of this kind of scientific evidence may make it difficult to determine what fissile material was used in the isolated Asian state's third nuclear test, which was detected by seismic monitors.

    The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), which has a global network of monitoring stations designed to pick up radioactive traces emitted from tests, said it had yet to find any such signs.

    "It is very unlikely that we will register anything at this point ... at this late stage," CTBTO spokeswoman Annika Thunborg said.

    Thunborg did not give details, but the failure to detect radioactive traces could indicate that North Korea managed to prevent any such release from the Feb. 12 underground explosion.

    The test-ban treaty was negotiated in the 1990s but has not taken effect because some holders of nuclear technology have not yet ratified it, including the United States and China.

    But the organization already monitors possible breaches, deploying more than 270 stations worldwide to look out for signs of atomic tests, including seismic waves and radioactive traces.

    It can take weeks to pick up radioactive so-called noble gases, depending on the weather.
            
    "We are confident that the system works very well," Thunborg said. A senior CTBTO official last month said the "smoking gun" of any nuclear test would be the detection of radionuclide traces.

    One critical question is what kind of fissile material North Korea used in the latest test. In 2006 and 2009, it is believed to have used plutonium as the fissile core.

    North Korea abandoned plutonium production in 2007, following international pressure, but later acknowledged that it had built facilities to produce enriched uranium, which can also be used in bombs if refined to a high degree.

    Without the trace evidence, however, U.S. and allied officials have said it would be very difficult for outsiders to determine whether the latest test involved a plutonium or uranium core.

    North Korea's Leader Visits Coastal Detachment

    • North Korean leader Kim Jong Un visits the Wolnae Islet Defence Detachment in the western sector of the front line, which is near Baengnyeong Island of South Korea, March 11, 2013. (KCNA)
    • North Korean leader Kim Jong Un visits a long-range artillery sub-unit of the Korean People's Army Unit 641, March 11, 2013. (KCNA)
    • North Korean leader Kim Jong Un holds a guitar during his visit to a military unit on the Wolnae Islet Defence Detachment in the western sector of the front line, which is near Baengnyeong Island, South Korea, March 11, 2013. (KCNA)
    • North Korean leader Kim Jong Un waves while in a boat during his visit to the Wolnae Islet Defence Detachment in the western sector of the front line, which is near Baengnyeong Island of South Korea March 11, 2013. (KCNA)

    You May Like

    Video Rubio Looks to Surge in New Hampshire

    Republican presidential candidate has moved into second place in several recent surveys and appears to be gaining ground on longtime frontrunner Donald Trump

    UN Calls for Global Ban on Female Genital Mutilation

    Recent UNICEF report finds at least 200 million girls and women alive today have undergone female genital mutilation in 30 countries

    UN Pilots New Peace Approach in CAR

    Approach launched in northern town of Kaga Bandoro, where former combatants of mainly Muslim Seleka armed group and Christian and animist anti-Balaka movement are being paid to do community work

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    German Artists to Memorialize Refugees With Life Jacket Exhibiti
    X
    Hamada Elsaram
    February 05, 2016 4:30 PM
    Sold in every kind of shop in some Turkish port towns, life jackets have become a symbol of the refugee crisis that brought a million people to Europe in 2015.  On the shores of Lesbos, Greece, German artists collect discarded life jackets as they prepare an art installation they plan to display in Germany.  For VOA, Hamada Elrasam has this report from Lesbos, Greece.
    Video

    Video German Artists to Memorialize Refugees With Life Jacket Exhibit

    Sold in every kind of shop in some Turkish port towns, life jackets have become a symbol of the refugee crisis that brought a million people to Europe in 2015.  On the shores of Lesbos, Greece, German artists collect discarded life jackets as they prepare an art installation they plan to display in Germany.  For VOA, Hamada Elrasam has this report from Lesbos, Greece.
    Video

    Video E-readers Help Ease Africa's Book Shortage

    Millions of people in Africa can't read, and there's a chronic shortage of books. A non-profit organization called Worldreader is trying to help change all that one e-reader at a time. VOA’s Deborah Block tells us about a girls' school in Nairobi, Kenya where Worldreader is making a difference.
    Video

    Video Genius Lets World Share Its Knowledge

    Inspired by crowdsourcing companies like Wikipedia, Genius allows anyone to edit anything on the web, using its web annotation tool
    Video

    Video Former Drug CEO Martin Shkreli Angers US Lawmakers

    A former U.S. pharmaceutical business executive has angered lawmakers by refusing to explain why he raised the price of a life-saving pill by 5,000 percent. Martin Shkreli was removed from a congressional hearing on Thursday after citing his Fifth Amendment right to stay silent. Zlatica Hoke has more.
    Video

    Video Super Bowl TV Commercials are Super Business for Advertisers

    The Super Bowl, the championship clash between the two top teams in American Football, is the most-watched sporting event of the year, and advertisers are lining up and paying big bucks to get their commercials on the air. In fact, the TV commercials during the Super Bowl have become one of the most anticipated and popular features of the event. VOA's Brian Allen has a sneak peek of what you can expect to see when the big game goes to commercial break, and the real entertainment begins.
    Video

    Video In Philippines, Mixed Feelings About Greater US Military Presence

    In the Philippines, some who will be directly affected by a recent Supreme Court decision clearing the way for more United States troop visits are having mixed reactions.  The increased rotations come at a time when the Philippines is trying to build up its military in the face of growing maritime assertiveness from China.  From Bahile, Palawan on the coast of the South China Sea, Simone Orendain has this story.
    Video

    Video Microcephaly's Connection to Zika: Guilty Until Proven Innocent

    The Zika virus rarely causes problems for the people who get it, but it seems to be having a devastating impact on babies whose mothers are infected with Zika. VOA's Carol Pearson has more.
    Video

    Video Solar Innovation Provides Cheap, Clean Energy to Kenya Residents

    In Kenya, a company called M-Kopa Solar is providing clean energy to more than 300,000 homes across East Africa by allowing customers to "pay-as-you-go" via their cell phones. As Lenny Ruvaga reports from Kangemi, customers pay a small deposit for a solar unit and then pay less than a dollar a day to get clean energy to light up their homes or businesses.
    Video

    Video Stunning Artworks Attract Record Crowds, Thanks to Social Media

    A new exhibit at the oldest art museum in America is shattering attendance records. Thousands of visitors are lining up to see nine giant works of art that have gotten a much-deserved shot of viral marketing. The 150-year-old Smithsonian American Art Museum has never had a response quite like this. VOA's Julie Taboh reports.
    Video

    Video Apprenticeships Put Americans on Path Back to Work

    Trying to get more people into the U.S. workforce, the Obama administration last year announced $175 million in grants towards apprenticeship programs. VOA White House correspondent Aru Pande went inside one training center outside of Washington that has gained national recognition for helping put people on the path to employment.
    Video

    Video New Material May Reduce Concussion Effects

    As the 2016 National Football League season reaches its summit at the Super Bowl this coming Sunday (2/7), scientists are trying to learn how to more effectively protect football players from dangerous and damaging concussions. Researchers at Cardiff and Cambridge Universities say their origami-based material may solve the problem. VOA’s George Putic reports.
    Video

    Video Saudi Arabian Women's Sports Chip Away at Stereotypes

    Saudi Arabian female athletes say that sports are on the front line of busting traditions that quash women’s voices, both locally and internationally. In their hometown of Jeddah, a group of basketball players say that by connecting sports to health issues, they are encouraging women and girls to get out of their homes and participate in public life. VOA’s Heather Murdock reports.
    Video

    Video A Year Later, Fortunes Mixed for Syrians Forging New Lives in Berlin

    In April of last year, VOA followed the progress of six young Syrian refugees -- four brothers and their two friends -- as they made their way from Libya to Italy by boat, and eventually to Germany. Reporter Henry Ridgwell caught up with the refugees again in Berlin, as they struggle to forge new lives amid the turmoil of Europe's refugee crisis.
    Video

    Video Zika Virus May be Hard to Stop

    With the Zika virus spreading rapidly, the World Health Organization Monday declared Zika a global health emergency. As Alberto Pimienta reports, for many governments and experts, the worst is yet to come.