A motorcade believed to be carrying North Korea's leader Kim Jong Un travels past in Singapore June 10, 2018.
Police escort a motorcade believed to be carrying North Korea's leader Kim Jong Un in Singapore June 10, 2018, ahead of the summit between the North Korean leader and U.S. President Donald Trump.
TV reporters prepare their stand-up at a media center for the summit between the U.S and North Korea in Singapore, June 10, 2018.
North Korea's leader Kim Jong Un walks with Singapore's Prime Minister Lee Hsien Loong at the Istana in Singapore June 10, 2018.
North Korea's leader Kim Jong Un shakes hands with Singapore's Prime Minister Lee Hsien Loong at the Istana in Singapore June 10, 2018.
The vehicle carrying North Korean leader Kim Jong Un makes its way to the Istana in Singapore June 10, 2018.
Kim Yong Chol, a close aide to North Korea's leader Kim Jong Un, walks in the Istana in Singapore June 10, 2018.
Ri Su Yong, a member of the North Korean delegation, walks in the Istana in Singapore June 10, 2018.
North Korea's leader Kim Jong Un shakes hands with Singapore's Prime Minister Lee Hsien Loong at the Istana in Singapore June 10, 2018.
U.S. President Donald Trump greets Singapore's Foreign Minister Vivian Balakrishnan after arriving in Singapore June 10, 2018.
A soldier stands guard ahead of the arrival of U.S. President Donald Trump at Paya Lebar Air Base in Singapore, before a summit with North Korean leader Kim Jong Un, June 10, 2018.
Members of the North Korean delegation arrive at St Regis hotel, ahead of the summit between the North Korean leader Kim Jong Un and U.S. President Donald Trump, in Singapore June 10, 2018.
U.S. President Donald Trump waves next to Singapore's Foreign Minister Vivian Balakrishnan after arriving in Singapore June 10, 2018.
U.S. President Donald Trump arrives in Singapore June 10, 2018.
U.S. President Donald Trump is greeted by Singapore's Foreign Minister Vivian Balakrishnan after arriving in Singapore June 10, 2018.
U.S. President Donald Trump travels in a motorcade after arriving in Singapore June 10, 2018.
U.S. President Donald Trump waves from his vehicle upon arriving at Paya Lebar Air Base in Singapore, ahead of a summit with North Korean leader Kim Jong Un, June 10, 2018.
The plane carrying U.S. President Donald Trump arrives at Paya Lebar Air Base in Singapore, before his summit with North Korean leader Kim Jong Un, June 10, 2018.
Police officers patrol the Esplanade Waterfront in Singapore, June 10, 2018.
Police officers patrol the Esplanade Bridge in Singapore, June 10, 2018.
Image used for illustrative purpose.
North Korea's leader Kim Jong Un waves before departing Pyongyang to Singapore on June 10, 2018.
North Korea's leader Kim Jong Un inspects an honour guard ahead of his departure to Singapore in Pyongyang June 10, 2018. KCNA via REUTERS
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REFILE - CORRECTING DATE Journalists wait outside St Regis Hotel in Singapore June 11, 2018.
Sung Kim arrives at Ritz Carlton Hotel for a working-level meeting with North Korean officials in Singapore June 10, 2018.
Senior North Korean Diplomat Choe Kang Il arrives at Ritz Carlton Hotel for a working-level meeting with U.S. officials in Singapore June 11, 2018.
North Korean watch news report on North Korea's leader Kim Jong Un's Singapore visit in front of an electronic screen at Pyongyang station in Pyongyang, North Korea, in this photo taken by Kyodo June 11, 2018.
Media gather outside the Ritz-Carlton hotel as part of coverage of the summit between North Korea and the U.S. in Singapore June 11, 2018.
Singapore Foreign Minister Vivian Balakrishnan meets North Korean Foreign Minister Ri Yong Ho at Singapore's Ministry of Foreign Affairs in this handout photo supplied by the Ministy of Foreign Affairs, June 11, 2018.
U.S. President Donald Trump travels with his motorcade ahead of his meeting with Singapore's Prime Minister Lee Hsien Loong in Singapore June 11, 2018 in this still image taken from Reuters TV footage.
Singapore Foreign Minister Vivian Balakrishnan meets North Korean Foreign Minister Ri Yong Ho at Singapore's Ministry of Foreign Affairs in this handout photo supplied by the Ministy of Foreign Affairs, June 11, 2018.
Jun Miyagawa, a Japanese speciality bookdealer on North Korea publications, sits next to North Korean publications he is displaying next to St. Regis hotel in Singapore June 11, 2018.
Jun Miyagawa, a Japanese speciality bookdealer on North Korea publications, is seen next to North Korean publications he is displaying next to St. Regis hotel in Singapore June 11, 2018.
Senior North Korean Diplomat Choe Son Hui leaves the Ritz-Carlton hotel following a meeting in Singapore June 11, 2018.
Members of the media work as part of coverage of the summit between North Korea and the U.S. in Singapore June 11, 2018.
A worker of a media center for the summit between the U.S and North Korea shows fans featuring the images of U.S. President Donald Trump (L) and North Korean leader Kim Jong Un, which provided for journalists in a media kit at the media center in Singapore, June 10, 2018. Reuters/Kim Kyung-Hoon
North Korean security personnel run next to a motorcade believed to be carrying North Korea's leader Kim Jong Un as it travels in Singapore June 10, 2018, ahead of the summit between the North Korean leader and U.S. President Donald Trump.
Police vehicles escort as the motorcade of North Korean leader Kim Jong Un makes its way to the Istana in Singapore June 10, 2018.
Women sing the U.S. national anthem as they wait for the arrival of U.S. President Donald Trump outside the Shangri-La Hotel in Singapore June 10, 2018.
U.S. President Donald Trump waves as he steps off his plane upon arriving at Paya Lebar Air Base in Singapore, ahead of a summit with North Korean leader Kim Jong Un, June 10, 2018.
North Korea's leader Kim Jong Un shakes hands with North Korea's President of the Presidium of the Supreme People's Assembly, Kim Yong Nam, before his departure to Singapore, in Pyongyang June 10, 2018.
North Korean watch news report on North Korea's leader Kim Jong Un's Singapore visit in front of an electronic screen at Pyongyang station in Pyongyang, North Korea, in this photo taken by Kyodo June 11, 2018.
Police stand guards outside St. Regis hotel in Singapore June 11, 2018.
A journalist reads a local newspaper showing an article on the summit between U.S. President Donald Trump and North Korean leader Kim Jong Un near St. Regis hotel in Singapore June 11, 2018.
A motorcade believed to be carrying North Korea's leader Kim Jong Un travels past in Singapore June 10, 2018, ahead of the summit between the North Korean leader and U.S. President Donald Trump.
A member of the North Korean security personnel waits for the arrival of North Korea's leader Kim Jong Un at a hotel in Singapore June 10, 2018, ahead of the summit between the North Korean leader and U.S. President Donald Trump.
A TV news reports about U.S. President Donald Trump is projected on tv sets at a media center for the summit between the U.S and North Korea in Singapore, June 10, 2018.
North Korean security personnel run next to a motorcade believed to be carrying North Korea's leader Kim Jong Un in Singapore June 10, 2018, ahead of the summit between the North Korean leader and U.S. President Donald Trump.
Singaporean policemen stand guard at a media center for the summit between the U.S and North Korea, in Singapore, June 10, 2018.
A North Korea cameraman runs away as South Korea photographer chases after him for pictures outside St Regis hotel, in Singapore June 10, 2018.
The motorcade of North Korean leader Kim Jong Un makes its way to the Istana in Singapore June 10, 2018.
Gurkhas stand guard on the road leading to the Shangri-La Hotel in Singapore June 10, 2018.
A motorcade believed to be carrying North Korea's leader Kim Jong Un travels past in Singapore June 10, 2018, ahead of the summit between the North Korean leader and U.S. President Donald Trump.
North Korea's leader Kim Jong Un meets with Singapore's Prime Minister Lee Hsien Loong at the Istana in Singapore June 10, 2018.
The vehicle carrying North Korean leader Kim Jong Un leaves the Istana, after the North Korean leader's meeting with Singapore’s Prime Minister Lee Hsien Loong, in Singapore June 10, 2018.
People take photos with their mobile phones along Orchard Road as the motorcade of North Korean leader Kim Jong Un makes its way to the Istana in Singapore June 10, 2018.
U.S. President Donald Trump steps off his plane as he arrives at Paya Lebar Air Base in Singapore, ahead of a summit with North Korean leader Kim Jong Un, June 10, 2018.
The Singapore and United States flags are pictured at the Shangri-La Hotel in Singapore, June 10, 2018.
Singapore's Minister for Home Affairs and Minister for Law, Kasiviswanathan Shanmugam, at a question and answer session with the media regarding the Trump-Kim summit in Singapore, June 10, 2018.
North Korean official Choi Sun Hee arrives at Ritz Carlton Hotel for a working-level meeting with U.S. officials in Singapore June 11, 2018.
Media gather outside the Ritz-Carlton hotel as part of coverage of the summit between North Korea and the U.S. in Singapore June 11, 2018.
Senior North Korean Diplomat Choe Son Hui leaves the Ritz-Carlton hotel following a meeting in Singapore June 11, 2018.
Singapore braces for U.S.-North Korea summit