Russia's new grain politics

Published August 11, 2010

It cannot be proved that the wildfires now devastating western Russia are evidence of global warming. Once-in-a-century extreme weather events happen, on average, once a century. But the Russian response is precisely what you would expect when global warming really starts to bite: Moscow has just banned all grain exports for the rest of this year.

At least 20 percent of Russia's wheat crop has already...