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China's President Xi Jinping (R) shakes hands with US Secretary of State Rex Tillerson (L) before their meeting at the Great Hall of the People in Beijing on March 19, 2017.
Tillerson met Xi on March 19 just hours after a North Korean rocket engine test added new pressure on the big powers to address the threat from Pyongyang. / AFP PHOTO / POOL / Lintao Zhang        (Photo credit should read LINTAO ZHANG/AFP/Getty Images)
China's President Xi Jinping (R) shakes hands with US Secretary of State Rex Tillerson (L) before their meeting at the Great Hall of the People in Beijing on March 19, 2017.
Tillerson met Xi on March 19 just hours after a North Korean rocket engine test added new pressure on the big powers to address the threat from Pyongyang. / AFP PHOTO / POOL / Lintao Zhang        (Photo credit should read LINTAO ZHANG/AFP/Getty Images)

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    US & China agree to cooperate on N. Korea

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US & China agree to cooperate on N. Korea

The growing threat of North Korea was high on the agenda throughout US Secretary of State Rex Tillerson's first trip to Asia. CNN's Will Ripley reports.

US & China agree to cooperate on N. Korea

The growing threat of North Korea was high on the agenda throughout US Secretary of State Rex Tillerson's first trip to Asia. CNN's Will Ripley reports.