U.S. President Donald Trump cast doubt on the chances of meeting North Korean leader Kim Jong Un during his trip to the Korean Peninsula this week, but said he will “come back” to the area for a meeting soon.

Speaking to reporters aboard Air Force One on his way to South Korea on Wednesday morning, Trump said he didn’t know whether he’ll meet Kim on his current trip and that his focus is on planned talks with his Chinese counterpart Xi Jinping in Gyeongju on Thursday.