Why U.K. bond yields are soaring

• It is also a global warning about a sharp repricing of inflation risk that can slam economies already grappling with higher energy costs.

The backdrop: British yields are higher now than they were at the height of the 2022 Liz Truss fiasco, when the nation's then-prime minister proposed a fiscal budget with billions of pounds in unfunded tax cuts.

• The difference now, of course, is the source of the panic — now, it has been triggered by inflationary concerns from a war it did not start and is not directly involved in, instead of domestic fiscal proposals.

Zoom in: The U.K.'s reliance on imported oil makes it especially vulnerable to the types of supply shocks that have been common in the 2020s.

• The surge in energy prices risks rippling through the British economy. It has heightened bets that the Bank of England will increase interest rates several times this year, a reversal from previous expectations of easier monetary policy.
• That's despite Bank of England chief Andrew Bailey's attempt to calm markets last week: "I would ​caution against reaching any strong conclusions about us ​raising interest rates," he told reporters on Thursday.

The bottom line: The bond sell-off is leaving the British government with even less headroom to maneuver through the crisis. The European Union is considering temporary measures to ease the burden on consumers.

• "[W]hat's happening now is a reminder that reckless fiscal policy leaves you vulnerable when unexpected shocks hit," Robin Brooks, a senior fellow at the Brookings Institution, wrote in a blog post over the weekend.

Go deeper: Washington ignored America's fiscal cliff