The IDF has announced it has assassinated Ahmed Al-Jabari, the head of the Ezzedine al-Qassam Brigades, the Hamas military wing. It is the start of what an IDF spokesperson on Twitter called "a widespread campaign on terror sites & operatives in the #Gaza Strip, chief among them #Hamas & Islamic Jihad targets." The IDF has named the attack "Pillar of Defense."

One Israeli television analyst reported that the strike on Jabari was planned months ago. The IDF spokesperson's office said that "All options are on the table. If necessary, the IDF is ready to initiate a ground operation in Gaza." is reporting that Israel has initiated an emergency call up of reservists to prepare for the possible invasion.

More casualties are being reported from Gaza. Israeli channel 10 has reported that Ahmed al-Zahar, the brother of Mahmoud al-Zahar, a major Hamas figure, was killed along with Jabari, although Haaretz is reporting that it was his assistant Mohammed Hams who was killed in the car with him.

The assassination breaks a day-old lull in what was intense fighting between the Israeli military and Palestinian fighters in Gaza. A tacit truce was reached with the help of Egypt, but Israel has now broken it decisively.
Khaled Meshaa
© Reuters
Ahmed Al-Jabari (right, front) and Hamas leader Khaled Meshaal (left, front) pose with two Palestinian prisoners freed in the prisoner swap deal between Hamas and Israel

Jabari, the Hamas leader, brokered the Palestinian side of the 2011 deal that freed Gilad Shalit, the Israeli soldier held captive in Gaza for over five years.

There are also rumors of other assassination attempts, though they are just unconfirmed reports at the moment. Ramallah-based journalist Dalia Hatuqa tweeted: "Sources confirming, others denying killing of Raed Al Attar, Al Qassam Brigades southern front commander."

Extrajudicial assassinations have long been a favored tool of the Israeli military, though in recent years they have stuck to killing leaders of other militant groups rather than Hamas, the ruling group in Gaza.

A massive response from Hamas is expected. The al-Qassam Brigades issued a statement following the attack saying, "the occupation has opened the gates of hell on itself." Gaza-based writer and activist Joe Catron tweeted:
Joe Catron @jncatron

I've rarely heard such outspoken anger in #Gaza's public discourse. This attack will be answered like few before it. #GazaUnderAttack

14 Nov 12
There have also been reports that Israel is targeting police stations in Gaza. The beginning of Operation Cast Lead at the end of 2008 saw the Israeli air force target and kill hundreds of police officers affiliated with Hamas. The legality of those operations depends on the context; read this Human Rights Watch Q and A for more on the targeting of police stations.

It will also be important to keep an eye on Egypt, which brokered the truce between Palestinian fighters and Israel. The last time there was an escalation between Gaza fighters and Israel, protests in Egypt arguably helped put more pressure on Israel to stop the fighting. A major Israeli operation in Gaza will be a test to see whether an Arab world in revolt can rein Israel in.

Twitter user RoadtoPalestine posted this photo with the caption "4 airstrikes":
Airstrikes on Gaza

Airstrikes on Gaza November 14, 2012
It's important to note that elections are coming up, similar to when Israel launched the devastating assault on Gaza in 2008-09. It seems that Israeli Prime Minister Benjamin Netanyahu wants to burnish his credentials ahead of the election. So far there has been wide support for the attack from political rivals. The Kadima Party chairman Shaul Mofaz said, "I congratulate the prime minister on returning to the policy of assassinations; all those in the chain of command of terror organizations need to live in a constant pursuit." The Labor Party's Shelly Yacimovich said,"Israel is united in its war against terrorism."

We will continue to update this post as news becomes available.