U.S. stock-index futures fell broadly, led by a 1.03% decline in Nasdaq 100 futures. S&P 500 E-mini futures dropped 0.58% and Dow futures fell 0.55%. Spot silver (metal for immediate delivery) also weakened, tumbling about 3% during the session to $64.56 an ounce. Walter Bloomberg, a channel that posts breaking international economic news, reported the futures moves. Separately, the Israeli military said it had struck multiple targets in the Gaza Strip on Sept. 1.