US President Trump plans to speak alone with Kim Jong Un during their historic summit meeting in less that 12 hours from now, officials said Monday.
The US president is facing a high-stakes challenge to get North Korea to give up nuclear weapons.
The one-on-one session, plus translators, will supplement bigger meetings involving the leaders and their aides about proposals to help North Korea if it agrees to dismantle its nuclear weapons programs.
The White House also announced that Trump will now leave Singapore on Tuesday night, local time, a day ahead of schedule.
"The president is fully prepared for the meeting," Secretary of State Mike Pompeo said in previewing the first-ever summit between a sitting U.S. president and a North Korean leader.
Trump and Kim are scheduled to meet at 9 a.m. Tuesday in Singapore, which is 9 p.m. Monday in Washington.
Detailed discussions between U.S. and North Korea officials "are ongoing and have moved more quickly than expected," the White House said in a statement.
"Following the initial greeting, President Trump and Chairman Kim will participate in a one-on-one meeting, with translators only, an expanded bilateral meeting, and a working lunch," the statement added.
The president has his work cut out for him, some analysts said. Kim has long refused to give up nuclear weapons, claiming they are essential to defending his country.