South Koreans gathered in huge numbers in the capital Seoul on Saturday to support or oppose impeached president Yoon Suk Yeol before a court decides whether his short-lived declaration of martial law disqualifies him from office.

SEOUL (Reuters) - South Korea's acting President Choi Sang-mok called on Friday for the nation to respect and accept any decision, ahead of a Constitutional Court's ruling on the impeachment of leader Yoon Suk Yeol over his short-lived martial law order.

By Timothy Gardner, David Brunnstrom and Ju-min Park WASHINGTON/SEOUL (Reuters) -The U.S. Department of Energy has designated ally South Korea a "sensitive" country, a spokesperson said on Friday, after the South Korean president briefly imposed martial law and amid talk of Seoul potentially developing nuclear weapons.

South Korea's foreign minister told the country's legislature Wednesday that developing nuclear weapons is not off the table

The ruling People Power Party (PPP) on Saturday expressed "deep regrets" over the U.S. Department of Energy's (DOE) designation of South Korea as a "sensitive country," vowing to make an all-out response.