Sachs: Solve problems through rational cooperation

Jeffrey Sachs said that the current US administration is in a very non－operative, or "anti-cooperative" mood at the Vision China event on Wednesday.

He said he would like to see China become even more cooperative with other countries, to point out the difference between "America first" and China, which says the whole world should work together.

"We face very complex challenges and we should approach them with rationality and with seriousness," said Sachs.

Sachs is a professor of economics at Columbia University and senior UN adviser.