Key developments on North Korea this week

SEOUL, May 15 (Yonhap) -- The following are key developments regarding North Korea this week.

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May 9 -- N.K. leader sends congratulatory message to Putin

10 -- Xi sends response message to N.K. leader, vows to further bolster relations

12 -- U.S. national security advisor says N.K. leader is 'alive and well'

13 -- U.S. says N. Korea 'not cooperating fully' with counterterrorism efforts

14 -- S. Korean NGO delivers hand sanitizers to N. Korea to help antivirus fight

-- U.S. issues advisory to counter sanctions evasion by N.K., Iran, Syria
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