US President Donald Trump (Photo: AFP/VNA)

Trump said North Korean leader Kim Jong-un will have solid back-ups to run his country.

Pyongyang on Tuesday threatened to cancel the summit with the US set for June 12 in Singapore to protest a US-South Korea defense drill, and criticized Washington’s demand that North Korea unconditionally end its nuclear program.

White House spokesperson Sarah Sanders said the US is preparing for the meeting with North Korea, adding that the event will occur whenever Pyongyang is ready.