The base metals complex remain under pressure as risk reduction creates profit taking and long liquidation, but this has "very little to do with market fundamentals," says a London-based broker. The recovery of the US dollar was the catalyst for the selling, he notes. "Once again this activity highlights the need to separate medium- from short-term trading and to watch the global effect of outside forces," he adds. LME copper trades at $7,685/ton, -3% from Thursday's high.