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Yukiya Amano, Director General of the International Atomic Energy Agency (IAEA), speaks at the Carnegie International Nuclear Policy Conference in Washington, DC, on March 23, 2015.    AFP PHOTO/NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
Yukiya Amano, Director General of the International Atomic Energy Agency (IAEA), speaks at the Carnegie International Nuclear Policy Conference in Washington, DC, on March 23, 2015.    AFP PHOTO/NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)

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    IAEA chief: N.Korea seismic activity similar to 2013 test

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IAEA chief: N.Korea seismic activity similar to 2013 test

IAEA chief Yukiya Amano tells Christiane Amanpour the seismic activity in North Korea was similar to the country's underground nuclear test in 2013.

IAEA chief: N.Korea seismic activity similar to 2013 test

IAEA chief Yukiya Amano tells Christiane Amanpour the seismic activity in North Korea was similar to the country's underground nuclear test in 2013.