Their attempts to fight back will only escalate the situation, and the carnage will continue.
Edit: I'm not advocating that we not support Israel. I'm simply stating a hard truth regarding "why they hate us".
[1] http://www.nytimes.com/2014/09/25/world/middleeast/isis-abu-...
[2] http://www.al-monitor.com/pulse/originals/2014/07/islamic-st...