The IDF had reached its goal of stopping rocket attacks after first week, then gov. stepped in to order punishment of Gaza as revenge on Hamas for rocket attacks and to send a message not to mess with Israel. This can only be proved by questioning the IDF officers but gov. will never let this happen. If IDF ordered to punish Gaza then that is a war crime and part of reason behind Goldstone report. Israel had the legal right to stop rocket attacks but IDF when beyond that based on IDF's own reports and reports from UN/Aid workers in Gaza, the only question is who ordered it. Israel gov. is fighting Goldstone report so hard because there is some truth in it.
In Cameroon, suicide bombing toll rises to 19 dead, 143 wounded (Reuters)
from the article: Herzog: Israeli leaders' remarks led to Goldstone war crime accusations