(Bloomberg) -- New Zealand is escalating a long-running trade dispute with Canada over access for its dairy exporters to the Canadian market.Most Read from BloombergInside the ‘Utopias’ of Mexico CityOne City’s Plan to Re-Link a Neighborhood That Robert Moses DividedCities Look to AI to Flag Residents’ Trash and Recycling MistakesChicago Should Consider Furloughs, Higher Booze Tax, Watchdog SaysA Broken Oil Pipeline Plunges South Sudan’s Capital Into ChaosNew Zealand has notified Canada that it