US Secretary of State Rex Tillerson says a ‘dramatic’ and surprising change of posture by Kim Jong Un led President Donald Trump to agree to a meeting with the North Korean leader. Tillerson says the US was taken aback at how ‘forward-leaning’ Kim was in his conversations with a visiting South Korean delegation. He said it was the strongest indication to date of Kim's ‘not just willingness but really his desire for talks.’ Tillerson said Trump made the decision ‘himself’ after determining the time was right for ‘talks’ - but not formal negotiations. But he said it will take ‘some weeks’ to arrange the timing for their meeting.