FILE - In this Oct. 10, 2015, file photo, warheads are paraded during a military parade during celebrations to mark the 70th anniversary of North Korea's Workers' Party in Pyongyang, North Korea. For months, North Korea has been relatively uncombative, as leader Kim Jong Un grapples with the coronavirus pandemic, a string of natural disasters and the deepening economic pain from years of tough U.S.-led sanctions. (AP Photo/Wong Maye-E, File)FILE - In this Oct. 25, 2015, file photo, North Korean leader Kim Jong Un gestures as he watches a military parade during celebrations to mark the 70th anniversary of North Korea's Workers' Party in Pyongyang, North Korea. For months, North Korea has been relatively uncombative, as Kim grapples with the coronavirus pandemic, a string of natural disasters and the deepening economic pain from years of tough U.S.-led sanctions. (AP Photo/Wong Maye-E, File)People gather during a fun stage, "My Home Full of Laughs" to celebrate the 75th founding anniversary of the Workers' Party of Korea at the Youth Park Open-Air Theater in Pyongyang, North Korea Wednesday, Oct. 7, 2020. (AP Photo/Jon Chol Jin)
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FILE - In this Oct. 10, 2015, file photo, warheads are paraded during a military parade during celebrations to mark the 70th anniversary of North Korea's Workers' Party in Pyongyang, North Korea. For months, North Korea has been relatively uncombative, as leader Kim Jong Un grapples with the coronavirus pandemic, a string of natural disasters and the deepening economic pain from years of tough U.S.-led sanctions. (AP Photo/Wong Maye-E, File)
