Two former senior aides to South Korea’s ex-president Yoon Suk-yeol have testified in court that Yoon pressed ahead with a plan to impose martial law despite objections from cabinet members and top officials, with their statements offering a rare insight into the events that led to the short-lived decree.Testimony by former National Security Office chief Shin Won-sik and former presidential chief of staff Chung Jin-suk on Monday shed new light on Yoon’s thinking behind his martial law...