Kim Jo Yong, the powerful sister of the North Korean leader, has threatened to scrap inter-Korean co-operation as she condemned ongoing military drills between South Korea and the United States, and cautioned the US against “causing a stink” if it wants peace, state media reported on Tuesday. Al Jazeera reports that the statement comes a day before America’s top diplomat and defence chief, who are currently in Japan, are scheduled to arrive in Seoul and seems designed to ensure that North Korea will be at the top of the agenda when they land in Seoul. North Korea has so far rebuffed US calls for dialogue, the White House said on Monday, as the chill in relations that began under previous President Donald Trump extended into Joe Biden’s presidency.