A polity which is not energy rich should have a diverse energy portfolio so one country doesn't have too much power. As it stands, 40% of European natural gas c

A polity which is not energy rich should have a diverse energy portfolio so one country doesn't have too much power. As it stands, 40% of European natural gas comes from Russia and virtually none from the US. Investing more in Russia gives Russia tremendous power over Europe. Diluting that investment with natural gas from the US or some other suppliers means that Europe can afford to walk away from any deal with any of them at small cost to itself. Further still, divesting itself of nuclear also worsens EU energy security, because nuclear doesn't require a pipeline from anywhere (yes, you have to import Uranium, but its very cheap to import per unit energy, even at its current elevated price point).