North Korean leader Kim Jong Un's influential sister slammed the US and South Korea, the South's Yonhap news agency reported Tuesday, as the new US secretaries of state and defense began a visit to Tokyo and Seoul. The US and South began joint military exercises last week and North Korean state media carried a statement from Kim Yo Jong offering "a word of advice to the new administration of the United States that is struggling to spread the smell of gunpowder on our land from across the ocean," Yonhap reported. "If you wish to sleep well for the next four years, it would be better not to create work from the start that will make you lose sleep." sh/slb/bfm