And Asia Times has this commentary:
Iran pulls Syria's strings over Lebanon But as the assassination of Hariri unexpectedly united most of Lebanon's antagonist factions, mostly the Christians, Sunnis, Druze and Shi'ites, in an anti-Syrian national uprising, and international pressures increased, spearhead by Washington and Paris, urging President Bashar al-Assad to take out his 14,000-15,000 soldiers from the neighboring nation, Iran rushed to help Syria by activating the Lebanese Hezbollah, or the Party of God.
The Shi'ite-based organization was created by the Islamic Republic in 1982, in essence to fight anti-Iranian operations mounted by Iraq in the region, but also as a tool responding to one of the principles of the Islamic Republic: the annihilation of the Jewish state and ending the presence in the region of its Western supporters, mainly the US - objectives that also responded to Syrian goals.
Armed, financed and trained by both Iran and Syria, the Hezbollah enjoys enviable popularity both in Lebanon and throughout the Arab world because of its unabated fight against the Israelis, to the point that it is credited as the "single Arab movement that forced the mighty Tsahal
to withdraw in June 2000 from the areas it had occupied in parts of southern Lebanon since 1982".
It was also Hezbollah that put an end to the presence of US Marine Corps and French forces in the country by killing more than 240 Americans in their barracks in Beirut in 1983 and 120 French soldiers in deadly suicidal attacks against their garrison.
http://www.atimes.com/atimes/Middle_East/GC08Ak02.html