It’s not something that any sane person could wish for, but the horrors in Ukraine have concentrated the European mind as if it were the threat of hanging. Right across the continent, in and out of the European Union, the real cost of trying to squeeze out hydrocarbon fuels is suddenly painfully obvious. Years of dwindling exploration by oil companies bullied into cutting back, a failure to diversify sources of gas, and coal mining painted as the work of the devil, have followed the romantic belief that a combination of windmills and solar panels will somehow replace fossil fuels.