After months playing catch-up with inflation, central bankers were starting to believe they have finally pegged interest rates at just about the right level to keep a lid on prices without completely throttling the economy. A big jump in energy costs is just one way the conflict could make itself felt as it looms large among clouds which U.S. Federal Reserve Chairman Jerome Powell acknowledged on Thursday "pose important risks" to the global economy. While any impact may be minor next to the human tragedies in the conflict zone itself, it would be bad news for a weakened global economy which, in the words of the International Monetary Fund, is already just "limping" along.