The shock caused by the 2007-08 financial collapse, followed by the European sovereign debt crisis, has raised new doubts about the ability of the single currency to work well in a region with huge economic and political diversity. It has also given a new dimension to this debate by highlighting the building-up of unsustainable macroeconomic imbalances within the European Monetary Union (EMU).

Dollar changes impact negatively oil prices most of the times, except when the dollar reaches particularly high levels. During these episodes of high dollar values, the relation between both variables turns positive.

Lors de paniques financières, les investisseurs cherchent à se protéger en délaissant leurs actifs risqués pour s’orienter sur des actifs sans risque ou des valeurs refuges. Des monnaies peuvent-elles jouer ce rôle ? Une récente étude du CEPII montre que seuls le dollar et le yen sont candidats à ce statut.