Hillary Clinton on Lebanon's political tensions
Hezbollah and its allies have threatened to quit the Lebanese cabinet unless their demands over a UN tribunal probing the murder of ex-premier Rafik Hariri are met.
The move would automatically bring down the government, ministers have warned.
Tension has been high in Lebanon, amid indications that Hezbollah members could be indicted by the UN tribunal.
The US Secretary of State, Hillary Clinton, told the BBC's Kim Ghattas that there was no reason to expect the tensions to lead to violent unrest.
Mrs Clinton said the US will "continue to support the integrity of an independent sovereign Lebanon".