From that link ..........
"Nabih Beri, Lebanon's parliament speaker and Hezbollah's de facto negotiator, rejected proposals brought by U.S. Secretary of State Condoleezza Rice on Monday, inisisting a cease-fire must preceed any talks about resolving Hezbollah's presence in the south, an official close to the speaker said."
It's a coalition government; naturally he will defend the interests of Hezbollah.