REUTERSDonald Trump and Melania arrive safely in Seoul amid threats from North Korea
It comes as North Korea threatened “merciless retaliation” over Trump’s “foolish remarks” which the US President made earlier while in Japan.
Speaking in Tokyo the US President had said: "We are working to counter the dangerous aggressions of the regime in North Korean.
"The regime continues development of its unlawful weapons programs, including its illegal nuclear tests and outrageous launches of ballistic missiles directly over Japanese territory, are a threat to the civilised world and international peace and stability.
"We will not stand for that: the era of strategic patience is over.”