The closure of the Strait of Hormuz would cause oil prices to surge and trigger a sharp slowdown in economic growth, economists have warned.

Although the U.S. is a net oil exporter, higher oil prices could increase inflation and lower economic growth.

That sent the yield on the 10-year Treasury up to 4.43% from 4.36% late Thursday. Higher yields can tug down on prices for stocks and other investments, while making it more expensive for U.S. companies and households to borrow money.

Oil prices leaped, and stocks slumped on worries that escalating violence following Israel’s attack on Iranian nuclear and military targets could damage the flow of crude around the world, along with the global economy.

A sustained rise in the price of crude oil, which jumped sharply after Israel attacked Iran, could hurt consumers and President Trump’s efforts to bring down energy costs.

The Federal Reserve is widely expected to hold interest rates steady next week, with investors focused on new central bank projections that will show how much weight policymakers are putting on recent soft data and how much risk they attach to unresolved trade and budget issues and an intensifying conflict in the Middle East.