The world’s largest economy unexpectedly lost steam heading into the summer as the destabilizing conflict in the Middle East upended energy markets.

Second-quarter U.S. economic growth dramatically missed estimates. Inflation-adjusted gross domestic product grew at an annual rate of 1.5% over the three months that ended in…

The U.S. economy expanded at a sluggish 1.5% pace from April through June as rising imports weighed on growth. But consumer spending rose.