<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><span style="font-size: 12.8px;">President Donald Trump has said the US will go on to the next step if his planned summit with North Korean leader Kim Jong Un does not materialise. </span></div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><br />''</div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;">Talking to reporters in his Oval Office, Mr Trump said China is responsible for a change in Pyongyang's stance on the historic meeting between the two leaders. </div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><br />''</div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;">He added that things are changed a little bit after North Korean leaders had the second meeting with President Xi Jinping.</div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"><br />''</div>''<div style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;">A cloud of uncertainty continues to hover over Trump's meeting with Kim in Singapore as North Korea on Tuesday abruptly threatened to pull out of the planned June 12 summit, blaming US demands for "unilateral nuclear abandonment". Pyongyang has also taken strong exceptions to military drills between the US and South Korea.</div>''<div class="yj6qo" style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;"></div>