US President Donald Trump said Thursday that China’s recently returned envoy to North Korea “seems to have had no impact on” Kim Jong Un.

“The Chinese Envoy, who just returned from North Korea, seems to have had no impact on Little Rocket Man. Hard to believe his people, and the military, put up with living in such horrible conditions. Russia and China condemned the launch,” Trump tweeted.

North Korea fired a ballistic missile Tuesday that traveled more than 600 miles, its first launch in more than two months. The Kim regime claimed that its Tuesday test shows its missiles capable of striking the entire continental U.S. The missile reached an altitude of 2,800 miles, the highest any North Korean missile has climbed, and landed in the Sea of Japan, within the Japan’s exclusive economic zone.