No, but justified self-defense is a whole different story. Unfortunately, the media is so pro-Israeli that it it is impossible to have the actions of the Palestinians seen in light of self-defense. Every military action by them is labelled as "terrorist aggression", every military action by Israel is labelled "justified pre-emptive strike".
Let's not forget that this current round of bombing was started when Ahmed al-Jabari was assassinated, despite the fact that he was about to sign (the very morning he was killed, in fact) a cease fire agreement he and his Israeli counterpart had been working on for some time. Being about the only man on the Palestinian side with the respect of the actual soldiers on the ground needed to actuall give effect to a cease fire, one can only wonder why Israel killed him, and at that precise moment in time.
On Wednesday morning, letting him get to work like any other morning would have resulted in a long-term ceasefire plan, designed and agreed to by both Hamas leaders as well as Israeli government officials. Instead, they blew up his car on the way to work, triggering the current round of fighting.