The United States is leading a diplomatic dash to deter Israel from striking Lebanon's capital Beirut or major civil infrastructure in response to a deadly rocket attack on the Golan Heights, five people with knowledge of the drive said.

Washington is racing to avert a full-blown war between Israel and the Iranian-backed Lebanese movement Hezbollah after the attack on the Israeli-occupied Golan killed 12 youths over the weekend, according to the five people who include Lebanese and Iranian officials plus Middle Eastern and European diplomats.

Israel and the U.S. have blamed Hezbollah for the rocket strike, though the group has denied responsibility.