The influential sister of North Korean leader Kim Jong-un has called for Seoul to provide a detailed explanation about recent drone incursions, claiming that the drones from South Korea clearly violated the North's airspace. Kim Yo-jong, vice department director of the Central Committee of the Workers' Party of Korea, made the remarks as South Korea's defense ministry denied Pyongyang's claim about the drone incursions from the South's military, raising the possibility that private entities may have been involved in the alleged drone operations. "Fortunately, the ROK's military expressed an official stand that it was not done by itself and that it has no intention to provoke or irritate us," Kim said in a statement carried by the North's Korean Central News Agency. ROK is short for the Republic of Korea, the official name of South Korea. "But a detail explanation should be made about the actual case of a drone that crossed the southern border of our republic from the ROK," Kim said. Kim also expressed her personal appreciation that South Korea's defense ministry "took a wise choice" by a