You are insisting on seeing the world as you wish it to be and not as it really is. From the WSJ article posted by Dutch above, that gives you a chrono order of the events leading up to the war: But on June 19, 2008, Hamas and Israel commenced a six-month truce. Neither side complied perfectly. Israel refused to substantially ease the suffocating siege of Gaza imposed in June 2007. Hamas permitted sporadic rocket fire -- typically after Israel killed or seized Hamas members in the West Bank, where the truce did not apply. Either one or no Israelis were killed (reports differ) by rockets in the half year leading up to the current attack. Israel then broke the truce on Nov. 4, raiding the Gaza Strip and killing a Palestinian. Hamas retaliated with rocket fire; Israel then killed five more Palestinians. In the following days, Hamas continued rocket fire -- yet still no Israelis died. Israel cannot claim self-defense against this escalation, because it was provoked by Israel's own violation. An armed attack that is not justified by self-defense is a war of aggression. Under the Nuremberg Principles affirmed by U.N. Resolution 95, aggression is a crime against peace.
Nusra Front in Syria says it has detained U.S.-trained rebels (Reuters)
from the article: U.S. calls UN report on Gaza war unfair to Israel