South Korea’s opposition leader has urged the Constitutional Court to rule swiftly on a bid to remove President Yoon Suk Yeol from office, the day after parliament voted to impeach him over a short-lived attempt to impose martial law.

South Korea's acting president, Han Duck-soo, moved on Sunday to reassure the country's allies and calm financial markets a day after President Yoon Suk Yeol was impeached and suspended from his duties over a martial law attempt.