Gideon Rachman: The newspaper headlines in London proclaim that the temperature will drop to -10°C, and that Russia has just cut the gas supply to western Europe - again. And yet the reaction here seems rather less alarmed than the first time this happened back in 2006.

Why? For three reasons, I think. First, bad news is always slightly less shocking the second time around. Second, there is now more of a sense that this is a genuine economic dispute, as much as a Russian power play. There are real arguments to be had about Ukrainian debts to Gazprom, and the price Ukraine pays for its gas.