South Korea's Supreme Court upholds a seven-year prison sentence for former president Yoon Suk Yeol, rejecting appeals and confirming that he falsified documents, bypassed Cabinet deliberations and used presidential security agents to obstruct arrest after a brief imposition of martial law in 2024.The court endorses an earlier increase from five to seven years, notes prosecutors had sought ten years and backs the Constitutional Court's finding that the decree lacked legal basis; Yoon remains detained after his removal from office and continues to challenge other convictions, including a life sentence and a separate 30-year term tied to ordered drone flights.Prosecutors say the ruling enforces accountability for executive overreach and public harm, while Yoon's lawyers assert he acted for national security and vow further constitutional challenges, a series of legal battles that have reshaped the country's politics and temporarily disrupted government functions and markets.