Hundreds of supporters of South Korea's arrested president, Yoon Suk Yeol, stormed a court building early on Sunday after his detention was extended, smashing windows and breaking inside, an attack the country's acting leader called "unimaginable.

South Korean President Yoon Suk Yeol appeared in a Seoul court for his impeachment trial Tuesday, defending his short-lived martial law bid and denying charges that he ordered the military to drag lawmakers away.