In this Oct. 10, 2015, file photo, North Korean leader Kim Jong Un, right, joins hands and waves with visiting Chinese official Liu Yunshan, the Communist Party’s fifth-ranking leader, during a parade in Pyongyang, North Korea. China sees North Korea’s claim to have conducted its first hydrogen bomb test on Wednesday, Jan. 6, 2016, as yet another act of defiance, boding ill for a relationship already under strain. (AP Photo/Wong Maye-E)

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