SEOUL, South Korea — South Korean President Yoon Suk Yeol vowed to expand the country’s nonlethal aid to Ukraine when he met the European country’s first lady Tuesday in Seoul. Olena Zelenska visited South Korea as a special envoy of President Volodymyr Zelenskyy. During her meeting with Yoon, Zelenska requested South Korea expand its support of nonlethal military supplies, including equipment for detecting and removing mines and ambulance vehicles, according to Yoon’s office. Yoon replied that