bbc:

South Korean President Moon Jae-in has told the BBC that it is only a matter of time before the US and North Korea declare an end to their state of war on the Korean peninsula.

The war ended in 1953 with an armistice but a peace treaty was never signed.

Mr Moon, the son of North Korean refugees, also said there could be more diplomatic "bumps and bruises" as he tries to persuade Kim Jong-un to give up his nuclear weapons. 

But he described Mr Kim as "candid".

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