FILE PHOTO - Robert Lighthizer speaks after being sworn in as U.S. Trade Representative in Washington

FILE PHOTO – Robert Lighthizer speaks after being sworn in as U.S. Trade Representative in Washington

US Trade Representative Robert Lighthizer has said that China represents an 'unprecedented' threat to world trading system. Photo: Reuters/ Kevin Lamarque

July 28, 2017 4:26 AM (UTC+8)