Copper prices scaled their highest in six weeks on Tuesday on optimism about the possibility of U.S.-Iran peace talks restarting and due to a weaker dollar. Benchmark three-month copper on the London Metal Exchange rose 0.8% to $13,161 per metric ton by 0945 GMT, having touched its highest level since March 3 at $13,210.50. Negotiating teams from the U.S. and Iran could return to Islamabad later this week, five sources told Reuters. “Optimism that the US and Iran could restart peace talks is helping reverse some of the pressure metals faced recently from fears of surging energy costs and weaker economic growth,” said ... (full story)