Helicopters over National Assembly building in Seoul, Dec. 3, after President Yoon declares martial law. Yonhap Helicopters over National Assembly building in Seoul, Dec. 3, after President Yoon declares martial law. Yonhap Protesters gather outside National Assembly in Seoul past midnight Dec. 4, following President Yoon's martial law declaration. Yonhap Armed troops enter National Assembly building in Seoul early Dec. 4 . Yonhap Armed troops enter National Assembly building in Seoul early Dec. 4. Yonhap Candice Kim Copyright ⓒ Aju Press All rights reserved. Related Remains of 25 Korean War soldiers recovered in DMZ South Korean troops fire warning shots as North Korean soldiers cross MDL Defense ministry provides psychological support for soldiers deployed under martial law