If you want to avoid wars for oil and other fossil fuels everywhere, against Middle Eastern countries, against indigenous nations here on Turtle Island (what you call North America), and against anyone else, the answers are solar, wind, and other renewables. The cause of avoiding war in the Middle East does not justify war against American Indians any more than the cause of avoiding war against American Indians justifies war in the Middle East. Solar panels for peace! Wind mills for peace!
Also, not that it's news or anything, but if by "liberals" you mean "Democrats", the Democrat party has always been at best a fake green party -- to point to an obvious examples, bombing other countries is not green. True, a few green politicians may have infiltrated the Democrat party, and some greens may vote for them for "lesser evil" reasons, but the Democrat party as a whole are fake greens, not real ones. So it should come as no surprise that the Democrat party doesn't care about #NoDAPL either. Warmongers abroad, warmongers at home.
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