This regime is an infectious tumour for the entire Islamic world, Khamenei said in a speech that was aired on state television.
He rejected the demand by U.S. President George W. Bush that Hezbollah disarm, vowing, This will never happen.
He also described the Bush administration as the most hideous U.S. government in recent years.
Meanwhile, prominent Lebanese politician Walid Jumblat said on Sunday that Lebanon had become a battleground for Tehrans war with Tel Aviv.
The war is no longer that of Lebanon. It is an Iranian war, Jumblat told the Arabic satellite station al-Arabiya as Israeli armed forces continued to attack targets in southern Lebanon.
