Yoon Suk Yeol, South Korea’s since-impeached president, had been planning for months to impose martial law and target political opponents, according to accounts.

By Joyce Lee SEOUL (Reuters) -South Korea's leadership crisis will play out in the Constitutional Court, which will decide the fate of President Yoon Suk Yeol and Prime Minister Han Duck-soo, both impeached and suspended from power over a short-lived martial law.

The country has passed the U.N. threshold of a "super-aged society," with one in five of the population now aged over 65.

The impeachment of Han Duck-soo, acting president since Yoon was impeached on Dec. 14 for declaring martial law, has thrown South Korea's once-vibrant democratic success story into uncharted territory.

South Korea's opposition-controlled National Assembly voted to impeach acting President Han Duck-soo, further deepening the country's political crisis.

South Korea’s opposition-controlled National Assembly voted Friday to impeach a second head of state, acting President Han Duck-soo, despite vehement protests by governing party lawmakers, deepening a political crisis set off when President Yoon Suk Yeol stunned the nation by briefly imposing martial law.

South Korea’s opposition-controlled National Assembly has voted to impeach the country’s acting leader Han Duck-soo. The assembly approved the impeachment motion in a 192-0 vote. Han’s impeachment further deepens South Korea’s political crisis and damages its international image.

NBC News investigates health insurance companies denying cancer patients coverage for potentially life-saving treatments. South Korea’s interim president is impeached just two weeks after the ouster of the country’s former leader. And a small Tennessee town is still in recovery mode after Hurricane Helene.

South Korea has become a “super-aged” society with one in five people aged 65 or older, official data showed Tuesday, underscoring the country’s deepening demographic crisis.

South Korea has voted to impeach its acting president Han Duck-soo, two weeks after parliament voted to impeach its President Yoon Suk Yeol. A total of 192 lawmakers voted for his impeachment, more than the 151 votes needed for it to succeed.