North Korea's leader Kim Jong-un and President Trump hold a meeting at the DMZ. Photo: Brendan Smialowski/AFP/Getty Images

President Trump on Sunday became the first U.S. president to cross the border at the Demilitarized Zone (DMZ) that divides the two Koreas and enter North Korea, where he shook hands with North Korean leader Kim Jong-un.

Details: Afterward, Kim walked with Trump over to the South Korean side of the border, where he met South Korean President Moon Jae-in for the first trilateral meeting between the leaders of the 3 countries. Here's how the historic event unfolded, in photos.

Trump steps into North Korea. Photo: Dong-A Ilbo via Getty Images
Trump and Kim walk north of the Military Demarcation Line that divides North and South Korea. Photo: Brendan Smialowski/AFP/Getty Images
Trump and Kim in the Joint Security Area of Panmunjom in the DMZ. Photo: Brendan Smialowski/AFP/Getty Images
Trump and Kim south of the Military Demarcation Line that divides North and South Korea. Photo: Brendan Smialowski/AFP/Getty Images
The leaders stand north of the border. Photo: Brendan Smialowski/AFP/Getty Images
Kim meets with South Korean President Moon Jae-in as Trump looks on. Photo: Brendan Smialowski/AFP/Getty Images
White House senior advisers Jared Kushner and Ivanka Trump at the DMZ. Photo: Brendan Smialowski/AFP/Getty Images
The president meets U.S. service members stationed at Osan Air Base, South Korea, after his historic meeting. Photo: Brendan Smialowski/AFP/Getty Images
First daughter Ivanka Trump, Trump and U.S. Secretary of State Mike Pompeo at Osan Air Base. Photo: Kim Min-Hee - Pool/Getty Images

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