A former top CIA officer who took part in several meetings with North Korean leader Kim Jong Un has said that Kim had voiced his sincerity to U.S. Secretary of State Mike Pompeo about giving up his nuclear weapons by citing the burden that they would be for his children, media reports said Friday.

Andrew Kim, who was head of the CIA's Korea Mission Center and who helped bring about the June meeting in Singapore between U.S. President Donald Trump and the young North Korean leader, told the story during a speech at Stanford University on Friday.

Trump and Kim Jong Un are scheduled to meet for their second summit on Feb. 27-28 in the Vietnamese capital of Hanoi.