Relations between the NLP political board and the Tigers' military command soured after the former, headed by Camille Chamoun, supported Syria's military intervention in June that year whereas the latter, now led by Camille's son Dany Chamoun, opposed it. Fearing that its own party's militia was getting out of control, Camille tacitly allowed its Kataeb rivals to absorb the Tigers' into the Lebanese Forces (LF) under Bachir Gemayel. Dany's adamant refusal of allowing the Tigers to be incorporated led to a Phalangist assault on his militia's headquarters in Safra on July 7, 1980, which resulted in a massacre that claimed up to 500 lives, including civilians and 80 of Dany's men.