A few relevant points from the same article you quoted.
First point:
Israel’s operation in Gaza, which left more than 1,300 Palestinians and 13 Israelis [soldiers]dead 
source: same article you linked to
Of those, 50% were confirmed women and children:
Those 1,000-plus dead Gazans are broken down into percentages defined in terms of women and children and the rest. The earliest figures stated that about 25 per cent of Gaza's dead were women and children , and that has steadily climbed close to the 50 per cent mark since Israel's ground invasion got under way.
http://209.85.173.132/search?q=cache...lnk&cd=5&gl=us And here is a number to put that into perspective:
One point five MILLION!
Second point:
Israel’s operation in Gaza...was said by the military to be aimed at stopping Hamas from firing rockets into Israeli territory. More than 30 rockets and mortar shells have been fired since Israel declared the [unilateral] cease-fire.
source: from the same article you linked to
Remember: all of you had justified the massive murder of Gazan civilians by saying that it was a-ok because it was the only way to stop rockets being fired at Israel.  And was it not all of us who told you that no matter how massive Israel's response was, it could not stop the rocket attacks? Rather, the only way to stop the rocket attacks was through negotiating a peace treaty or mutual ceasefire?  Do we not now see how the only few months in which no rockets were fired were when the two sides had agreed to a ceasefire, which Israel then broke?  
If the rockets started up again so quickly, what was the point of murdering 1,000+ Palestinians?
Third point:
The rockets were fired by other than Hamas to begin with:
Responsibility for today’s attack on Ashkelon was claimed by a Gaza militant group affiliated with the Lebanese Shiite Muslim Hezbollah, which fought a monthlong war with Israel in 2006.
source: from the same article you linked to
Fourth point:
Those who fired the rocket gave the exact same reason for firing them as Israel gives for devastating Gaza:
“In a continuation of revenge for our people’s blood, members of our rockets unit today fired two rockets,” the group, the Brigades of Hezbollah in Palestine, said in a leaflet faxed to journalists. 
source: from the same article you linked to
So Israel says it is retaliating for rocket attacks, and the militants say the exact same thing.
Fifth point:
The ceasefire was "unilateral", meaning Hamas was given no input on the matter.  It is like me jumping you from behind, beating you up, raping you, and then just when you are about to retaliate, I say "ceasefire!"  Having said that, Hamas did agree to a one-week ceasefire, which brings me to my sixth point.
Sixth point:
Gaza is blockaded on all sides, a tactic used since ancient times to starve out a people to death.  This is the crux of the matter, and anyone who cannot see that is blind:
Hamas is conditioning its agreement [to a permanent ceasefire] on Israel opening border crossings into Gaza.
source: from the same article you linked to
And from another article:
According to the United Nations, Palestinians are dying because of this blockade.  According to everyone, no Israelis have died since the rocket attacks on Israel have resumed.  So why is it that you are only focusing on the rocket attacks which kill nobody and not the starving out a people to death which *is* killing people?  One point five MILLION Palestinians have been injured by Israel, and you are worrying about a few rockets that land on the side of the road?