Hamas spokesperson Osama Hamdan speaks to Al Jazeera about the latest Israeli attacks on the Gaza Strip, following the killing of Hamas's Ahmad Jabari.

"Now they have started not only an attack, but it's a long operation against Gaza. They are working to target the local leaders and also some political leaders; because of that we are expecting some days of violence," he said.

"Everyone knows that Ahmed Jabari was the leader of al-Qassam troops during the war on Gaza 2008-2009 and he was the man behind the [2006] kidnapping of Gilad Shalit. So [the Israeli military] has started with this man because they believe they have a long revenge for him."

"We will respond, that must happen. I have to say clearly we know that this road of retaliation is very long and we have to sacrifice. And we have sacrificed a lot."

[Update: Since this interview was carried out, Al Jazeera has confirmed that Ahmad Jabari's son was not killed in the Israeli attack as Osama Hamdan mentioned.]

Source: Al Jazeera