By
Tuesday's meeting will be the first between a sitting US president and a leader of North Korea, whose nuclear and ballistic missile ambitions have raised global concerns and seen tensions soar.
It is an extraordinary turnaround from the rhetoric of last year, when Trump threatened the North with "fire and fury" and Kim dubbed him a "mentally deranged US dotard".
The summit has raised hopes of progress towards a peace treaty to formally end the Korean War, the last festering legacy of the Cold War, after hostilities only stopped with an armistice.