Should we be preparing for Russia's collapse and the global economic fallout that would follow?

An effigy depicting Russian president Vladimir Putin is seen in Lviv. Photograph: YURIY DYACHYSHYN/AFP via Getty Images The thing about dictatorships is that they always appear to be strong and incontestable until they suddenly fall and we all wonder how such regimes, woven thick with internal contradictions, ever held together for so long. Wagner chief Yevgeny Prigozhin's short-lived mutiny in Russia last month could have been the first act in Vladimir Putin's downfall drama. Alternatively it could have been just an episode in a long war of attrition, one that could entirely degrade Ukraine and weaken western resolve. No one…