A South Korean appeals court has increased the jail term for former President Yoon Suk Yeol on charges linked to his short-lived 2024 martial law declaration to seven years. A lower court sentenced Yoon to five years in prison in January after clearing him of some of the charges, but a court has found Yoon guilty of more charges following his appeal, including mobilising the presidential security service to prevent authorities from arresting him. "In trying to stop authorities from executing an arrest warrant by use of force, Yoon committed acts that are unacceptable in a society of law and order," the Seoul High Court judge said. The 65-year-old former prosecutor, who was impeached and removed from office last year, was also found guilty of charges that included fabricating official documents and failing to follow the legal process required for martial law , which has to be discussed at a formal cabinet meeting.…