Important because of his relationship with President Michel Sleiman. At the behest of Hisbollah, the March 8 Alliance has kept the government paralized in an attempt to convince everyone else to ignore the UN special tribunal. No one has, though many efforts have been made by Lebanese. The crucial role played by Saudi and Syria to prevent war seem to have succeeded for Hisbollah has had to risk a new government without them or elections.
Islamist militants attack African Union base in southern Somalia (Reuters)
from the article: Obama backs embattled Lebanon PM, after Hezbollah topples government