-1300 people killed in 2006 by Israeli bombs on Lebanon. do they get an international tribunal? no. 
-200,000 people killed during the civil war in Lebanon do they get an international tribunal? no but the killers get to be politicians. 
-Sabra and Shatila massacre done by Lebanese and Israelis.do they get an international tribunal?no, but it remains a taboo in this failed state called Lebanon.
one man gets killed and killing him would most likely spark a sectarian unrest in lebanon, gets a tribunal and a whole bunch of fabrication that a 5 years old wont buy.