A new video released by Isis militants entitled “A Message to our People in Jerusalem” has directly threatened to overthrow Hamas in Gaza because the group is not extreme enough.

Issued by Isis’s media wing from an Aleppo stronghold for the so-called Islamic State in Syria, it criticised Hamas for dealing with “nationalist” and “secularist” entities like Iran and the Shia Lebanese movement Hezbollah.

Posing with AK47 assault rifles, three different fighters were shown speaking in the 16-minute long video statement, addressed to the “tyrants of Hamas”.

“The point of jihad is not to liberate land… but to fight for and implement the law of God,” one fighter can be seen saying.

The video title appeared in both English and Arabic

The Isis members were critical of Hamas’s previous references to its supporters as “khawarij”, according to an al-Jazeera translation, translating roughly as “those who have transgressed”.

They also accused Hamas of “raising their children to respect this [Palestinian] flag”.

“We will uproot the state of the Jews (Israel) and you and Fatah (leading Palestinian political party), and all of the secularists are nothing and you will be over-run by our creeping multitudes,” one fighter said.

Hamas in pictures Show all 10 1 /10 Hamas in pictures Hamas in pictures December 2014 Hamas top leader in the Gaza Strip Ismail Haniya (L), spokesman for the Ezzedine Al-Qassam Brigades, Abu Obaida and Mussa Abu Marzuq (R) greet supporters during a parade marking the 27th anniversary of the Islamist movements creation in Gaza City Hamas in pictures December 2014 Hamas gunmen display their military skills during a rally to commemorate the 27th anniversary of the militant group AP Hamas in pictures December 2014 Masked members parade in a rally to commemorate the 27th anniversary of the Hamas militant group AP Hamas in pictures December 2014 Palestinian militants from the Ezzedine al-Qassam brigade, the armed wing of Hamas, carry mock-rockets as they march during a rally to commemorate the 27th anniversary of the Islamist movements creation, at the Nuseirat refugee camp in the Central Gaza Hamas in pictures November 2014 Palestinian young members of the Hamas' Popular Army parade during a graduation ceremony in Jabalia, in the northern Gaza Strip Hamas in pictures November 2014 Members of Hamas security forces march during their graduation ceremony at the fisherman's port in Gaza City AP Hamas in pictures August 2014 Abu Abida (3L), spokesman for the armed wing of the Hamas speaks during a Hamas militants parade in Shejaiya Hamas in pictures August 2014 A Palestinian man kisses a Hamas militant sniper during a parade by Hamas militants in Shejaiya Hamas in pictures August 2014 Palestinian militants from the Ezzedine al-Qassam Brigades (L), Hamas' armed wing, attend a rally in Gaza City, following a deal hailed by Israel and the Islamist movement as 'victory' in the 50-day war Hamas in pictures August 2014 Palestinian mourners gather during the funeral of three senior Hamas commanders in the southern Gaza Strip town of Rafah. Israeli warplanes killed three top Hamas commanders in southern Gaza inflicting a heavy blow on the movement's armed wing after failing to kill its top military chief

“The rule of sharia (Islamic law) will be implemented in Gaza, in spite of you. We swear that what is happening in the Levant today, and in particular the Yarmouk camp (near Damascus in Syria), will happen in Gaza.”

Isis remains at the heart of the terror debate within Israel itself, and on Tuesday the country’s intelligence minister, Israel Katz, accused Hamas of partnering with affiliates of the militant group in the Egyptian Sinai.

Repeating the sort of charge which Hamas has consistently denied in the past, he told a press conference in Tel Aviv: “There is cooperation between them in the realm of weapons smuggling and terrorist attacks. The Egyptians know this, and the Saudis.

“At the same time, within Gaza, Isis has been flouting Hamas. But they have common cause against the Jews, in Israel or abroad.”