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US inflation is now at a 40-year high. So, what are we going to do about it?

That depends on where you think the problem is coming from, American economist and University of Chicago professor Austan Goolsbee says on GZERO World with Ian Bremmer.

If inflation is being driven by too much stimulus, like some economists such as Larry Summers believe, Goolsbee believes the Federal Reserve is doing the right thing by raising interest rates to cool demand. But if inflation is mostly due to the war in Ukraine or supply chain disruptions, rate hikes might result in stagflation.