Here's a question: Why hasn't the Russian-Ukranian natural-gas spat sparked a frenzy of hand-wringing about energy security in Europe, as it did three years ago?Still no pressure (AP)In early 2006, when Russia turned off the taps to natural gas passing through Ukranian pipelines, Europeans got chilly. And European politicians who theretofore had talked more about climate change started adding "energy security" to their speeches. It became one of the three official pillars of European energy policy (alongside promoting greater competition and protecting the environment).This time around, European leaders said the dustup...