Newspapers fronting pictures of President Trump and Kim Jong Un at a stall in Hanoi. | (AP Photo/Minh Hoang)

A shopper looks at t-shirts featuring Kim Jong Un and President Trump. | (REUTERS/Jorge Silva)

President Trump's motorcade passes bystanders. | (REUTERS/Kim Kyung Hoon)

President Trump and Kim Jong Un shake hands before a one-on-one chat. | (REUTERS/Leah Millis)

Kim Jong Un and President Trump share a laugh. | (KCNA via REUTERS)

Kim Jong Un and President Trump at a sit-down meeting. | (KCNA via REUTERS)

President Trump meets with Kim Jong Un at the Sofitel Legend Metropole hotel. | (SAUL LOEB/AFP/Getty Images)

Following the summit's collapse, President Trump speaks as Secretary of State Mike Pompeo looks on. | (AP Photo/ Evan Vucci)

A North Korean refugee watches a broadcast of President Trump's press conference. | (ED JONES/AFP/Getty Images)

President Trump boards Air Force One to depart from Vietnam. | (REUTERS/Leah Millis)

The room which was supposed to host a working lunch between President Trump and Kim Jong Un. | (REUTERS/Leah Millis)

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