U.S. to isolate itself with protectionist measures: renowned U.S. economist

"When we say that the system is becoming more protectionist, it's because of the United States," said renowned U.S. economist Jeffrey Sachs. "Trade is mutually beneficial. Stopping trade is harmful … We need good open economic relations," he told Xinhua in an exclusive video interview, as Asia Pacific leaders are gathering in Peru's Lima for an APEC meeting.

Produced by Xinhua Global Service■