Key developments on North Korea this week

SEOUL, Sept. 24 (Yonhap) -- The following are key developments regarding North Korea this week.

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Sept. 17 -- U.S. remains open to dialogue with N. Korea: State Dept.

20 -- N.K. says U.S-Australia submarine deal 'extremely undesirable'

-- N. Korea discounts S. Korea's new SLBM as 'clumsy product' in 'elementary' development stage

21 -- Moon proposes formal end to Korean War for irreversible progress in denuclearization efforts

-- Biden says U.S. seeks diplomacy to completely denuclearize Korean Peninsula

22 -- U.S. open to discussion with N. Korea on end of war declaration: Pentagon spokesman

-- Top diplomats of S. Korea, U.S., Japan reaffirm cooperation on N. Korea

-- Top diplomats of S. Korea, U.S. discuss 'creative' ways to engage with N.K.: foreign ministry

24 -- N. Korea rejects Moon's proposal of end-of-war declaration as 'premature'

-- Kim Yo-jong calls Moon's war-end declaration offer 'admirable idea,' demands end to hostile policy
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