Climate change has kept Europe warm enough this winter to save it from Russian President Vladimir Putin’s energy crisis, but the respite may prove fleeting if—perhaps when—those same climate changes cause a crisis this summer. A warm and dry winter usually means a hot and dry summer, and Europe’s short-term relief could keep the continent from preparing for the next wave of energy crunches. Last year saw record breaking heat in much of the world, and a winter as historically mild as this one does not bode well for Europe’s coming summer temperatures.