Kim Yo-jong on Tuesday rejected US allegations linking Pyongyang to a $6.3 billion cryptocurrency theft, just three days after the US findings were announced. Experts say the unusually swift and high-profile nature of the statement from Kim — a department director of the Workers' Party of Korea's Central Committee and North Korean leader Kim Jong-un's sister — may reflect Pyongyang's concerns for its international reputation and an attempt to prevent the issue from complicating potential diploma