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.

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.

Looking ahead, investors will watch closely for updates on the Israel-Iran conflict, the US Federal Reserves decisions, and how the monsoon season develops in India. Investors are expected to be cautious because stock prices are already high and political tensions continue.