Will the Israeli-Hamas conflict spark a wider regional war, pulling in the U.S.?

The conflict between Israel and Hamas militants in Gaza has set off a chain reaction in the Middle East, and Western officials are increasingly concerned that it could trigger a wider war that draws in more nations.

Growing outrage in Middle Eastern capitals and much of the world over the plight of Palestinian civilians in Gaza is adding more fuel to an already volatile mixture that has seen violence spread to the West Bank, Israel’s northern border, the Red Sea and to Iraq and Syria, where U.S. forces have come under repeated drone and rocket fire from Iran’s proxies.