They had "constructive discussions" but did not reach an agreement in Hanoi, White House says
They were following up on their historic meeting last year in Singapore, which delivered a vague but optimistic agreement
The main topic of discussion is whether North Korea will ever agree to give up its nuclear weapons.
Mr Trump is set to give a press conference. The summit kicked off on Wednesday when the leaders held a quick one-on-one chat, followed by dinner
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