A senior U.S. official has condemned Hezbollah for its involvement in the Syrian civil war and says the Lebanese militant group's actions place the future of Lebanon at risk.

Deputy Secretary of State William Burns says Hezbollah has decided to put its own interests above those of the Lebanese people.

Burns spoke at a news conference in Beirut Monday at the end of a two-day visit to Lebanon during which he met with Lebanese officials.

Fighters from the powerful Shiite Muslim Lebanese party have joined Syrian President Bashar Assad's forces in their battle to crush the anti-Assad rebellion, which is dominated by Sunnis. The group's open participation in the war has helped fan sectarian hatreds in Lebanon and across the region.