Wall Street indexes posted modest gains and oil prices dipped on Wednesday as investors weighed the impacts of a Middle East conflict and a U.S. rate decision on a global economy already grappling with uncertainty stemming from U.

Stocks fell on Tuesday as Trump signaled that the U.S. could enter the war between Israel and Iran. Tariffs aren’t the only bearish signal on investors’ minds. Now they have to worry about a brewing war in the Middle East as well.