Sorry for my unclarity, but I understand the point at issue (of GP and this thread) to be how a prolongation of mutual economic relations with Russia was not justifiable morally, not how well a country could cope with an abrupt end of these relations economically or in terms of the well-being of their own population. You seem to argue with regard to the latter, and I would concur, although the linked article shows that after Germanyʼs 58.9 percent went down to zero, they either, in fact, could let their population freeze (household consumption went down) or got over it in other ways (a considerable part of the 58.9 percent was industrial consumption).