Candle-lit vigils and rallies were held across South Korea on Wednesday, a nation outraged and frustrated by the president’s surprise declaration of martial law the night before called for his resignation.

Trump, though, might face one seemingly intractable problem—the armed forces over which the president is commander-in-chief. In South Korea, after the National Assembly voted down Yoon’s martial law decree, the armed forces withdrew.

South Korean President Yoon Suk Yeol shocked the nation when he declared martial law and called in troops to secure the National Assembly building where parliament sits. The announcement sent citizens streaming to the streets on a cold December night to call for Yoon to resign and martial law to be lifted.