Russia would only retaliate in a visible way if they played a tit-for-tat strategy. But that's not the only option. That's only how Americans think ("something HAS to be done right now, it doesn't matter if we end up punishing the wrong guy or the wrong country").

From the point of view of Russia, this is just yet another move in the much larger scale game of energy geopolitics. Russia's answer might not be to blow up some random pipeline in Alaska but to do many other things that will secure their energy contracts elsewhere, while harming its adversaries in the process.