This photo, provided by Hanhwa Systems Co., a weapons-making arm of Hanhwa Group, shows a demonstration of the collective operation of unmanned patrol boats.

Honor guards take part in an interment ceremony for four soldiers killed in the 1950-53 Korean War at Daejeon National Cemetery in Daejeon, 164 kilometers south of Seoul, on June 19, 2020, in this

Jongro Academy, a private cram school, holds a college admissions briefing at a parking lot in Seocho, Seoul, on June 21, 2020, amid concerns over the spread of the new coronavirus. (Yonhap)

A beach in Boryeong on the west coast is crowded with people on June 21, 2020. (Yonhap)
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The top photo, taken in 2018, shows the South Korea-built support center for the Kaesong Industrial Complex in the North Korean border town of Kaesong.

Attendees watch the opening ceremony of the PyeongChang International Peace Film Festival at Olympics Medals Plaza in PyeongChang, Gangwon Province, 182 kilometers east of Seoul, on June 18, 2020.

The United Arab Emirates flag is displayed on the outer wall of N Seoul Tower on June 18, 2020, to mark the 40th anniversary of formal diplomatic relations between South Korea and the Middle Easter

South Korean marines walk in single file as they patrol Yeonpyeong Island in the Yellow Sea, on June 17, 2020.

Yonhap News Agency's President and CEO Cho Sung-boo (L) greets Oman's Ambassador to South Korea, Al-Saadi Zakariya Hamed Hilal, at Yonhap headquarters in downtown Seoul, on June 17, 2020.

The top photo shows the inter-Korean liaison office at the Kaesong Industrial Complex in North Korea in May before it was destroyed on June 16, 2020, after Pyongyang threatened to take strong actio