Bloomberg Copper posted the biggest gain in almost four years, leading a surge in metals, as exports from China jumped and BHP Billiton Ltd. signaled a halt in shipments from the world’s largest copper mine. Silver neared the longest string of weekly gains since 2011 and mining stocks rose. Overseas shipments from China, the top industrial-metals user, rebounded in …

  Bloomberg A Triple-Eh credit rating? For Canada, maintaining the trust of borrowers is a source of national pride, like winning the gold medal in Olympic ice hockey: hard-earned international validation of the nation’s skill, discipline and strong stewardship. But Fitch Ratings is warning that the country’s prized standing in the eyes of creditors may suffer because of protectionist measures …

    Bloomberg Just a year after Russia won the title of the world’s largest wheat supplier, it’s already in danger of losing it. The US Department of Agriculture has cut its forecast for Russian wheat exports this season for a second time, to 28.5 million metric tons. That’s closing the gap to the 27.5 million tons of shipments now …