U.S. stock market futures were falling Sunday night after Israel and Iran ramped up their aerial attacks early Sunday, and after President Donald Trump suggested that “it’s possible” the U.S. could get involved in the conflict.

Stock futures wavered before Monday's session as the escalating conflict between Israel and Iran spiked oil prices and raised investors' concerns about the global economy. Dow Jones Industrial Average futures shed 56 points, or 0.1%. S&P 500 futures lost 0.1%, while Nasdaq 100 futures traded around their flatline.

What to expect for the upcoming holiday-shortened week.

Stock futures decline before Monday's session as the escalating conflict between Israel and Iran spiked oil prices and raised investors' concerns about the global economy. Dow Jones Industrial Average futures shed 184 points, or 0.4%. S&P 500 futures lost 0.4%, while Nasdaq 100 futures dropped 0.4%.