Israel Rocket to Palestine Car

Jabari military chief was killed in a car by Israel rocket striking in Hamas, Gaza City. In result tons of civilians were taken to the hospital being critically injured. Israel now only has two things to focus on protect its civilians and target the terror of what and who has done this.

Question:
Who is to blame in your opinion?

Bibme:
 Davies, Wyre. "BBC News - Israeli air strike kills Hamas military chief Jabari." BBC - Homepage. N.p., 14 Nov. 2012. Web. 15 Nov. 2012. <http://www.bbc.co.uk/news/world-middle-east-20328579>.