ST PETERSBURG, July 15 - A dispute over access for U.S. meat to the Russian market derailed U.S.-Russian talks on a deal for Russia to join the World Trade Organization, Reuters reported Saturday citing America's top trade negotiator.

After intense, late-night negotiations this week, U.S. and Russian officials failed to reach a trade deal in time for the Group of Eight summit this weekend in St. Petersburg, where Russia had hoped to sign a trade accord with the United States.