The Iran war is adding to Europe's central banks rate-decision headaches

Before the war on Iran began in late February, Europe's central banks enjoyed a more benign inflation outlook as interest rates looked set to remain stable or keep falling across the region.

But the conflict has upset the economic equilibrium, threatening Europe's energy supplies, growth and the outlook for consumer prices. Expectations for interest rates across the continent have been upended.

On Thursday, the European Central Bank, Bank of England, Sweden's Riksbank and Swiss National Bank all deliver their latest monetary decisions. Each central bank is also likely to deliver its first comments on how the U.S. and Israel's war on Iran, which began in late February, is likely to impact their decision-making.