President Donald Trump said on Tuesday that Chinese efforts to persuade North Korea to rein in its nuclear program have failed, ratcheting up the rhetoric over the death of an American student who had been detained by Pyongyang.
Trump had held high hopes for greater cooperation from China to exert influence over North Korea, leaning heavily on Chinese President Xi Jinping for his assistance. The two leaders had a high-profile summit in Florida in April and Trump has frequently praised Xi and resisted criticizing Chinese trade practices.
"While I greatly appreciate the efforts of President Xi & China to help with North Korea, it has not worked out. At least I know China tried!" Trump wrote in a tweet.
It was unclear whether his remark represented a significant shift in his thinking in the US struggle to stop North Korea's nuclear program and its test launching of missiles or a change in US policy toward China.