WASHINGTON—A new report from the U.S. Center for Naval Analyses and the London-based Royal United Services Institute, two of the NATO alliance's front-line strategy centers, recommends putting more effort into fighting global warming than securing reliable supplies of fossil fuels.The authors call the habitual American fixation on winning energy independence through expanded North American production of oil and natural gas "misguided." They say the "only sustainable solution" to the problem of energy insecurity is not through more drilling, but through energy efficiency and renewable fuels, like biofuels to replace oil.Despite the steady supplies provided by the current U.S. drilling boom, "the increased domestic production of oil and natural gas is not a panacea for the country's energy security dilemma," they say.