North Korean leader Kim Jong Un's influential sister Kim Yo Jong on Monday said regret expressed by Seoul over a January drone incursion into the North as wise behaviour. South Korean President Lee Jae Myung had earlier expressed regret to Pyongyang after a drone entered North Korea earlier this year, calling the act "irresponsible." "The ROK [South Korea] president personally expressed regret and talked about a measure for preventing recurrence. Our government appreciated it as very fortunate