Trader Thomas Kay, center, works with colleagues at their booth on the floor of the New York Stock Exchange, Friday, Dec. 11, 2015. Stocks are sharply lower in midday trading, led by more declines in energy and materials stocks as prices for oil and other commodities slide. (AP Photo/Richard Drew))

Stocks around the world fall as investors fear slide in oil

Investors worry the sharp fall in the price of oil and other commodities is a sign of weakness in the global economy, especially China, and that will cut into profits at big energy producers and suppliers of raw materials as well as other companies.

Democratic presidential candidate Hillary Rodham Clinton speaks during a campaign event at Clark Atlanta University Friday, Oct. 30, 2015, in Atlanta. (AP Photo/David Goldman)

Clinton vows to defeat Islamic State if elected

Clinton has sought to offer an extensive plan to dismantle the terrorist group from the air, ground and online, and plans to outline her strategy for homeland security next week.