The Paris terror attacks that killed 129 people were a result of "endless interventions" by the West in the Middle East "that have come back to haunt us", former London mayor Ken Livingstone has said.
On Monday morning David Cameron said British security services have prevented seven attacks in the last six months and warned a Paris-style attack "could happen here".
Livingstone told BBC Radio 4's Westminster Hour the source of threat was past Western military actions including the 2003 Iraq War.
"All these terrorist attacks, the statements they make on their websites and so on are all about foreign policy. I don't think Islamohpbia is a major factor in all of this, it's the endless interventions of Britain and America and France in Arab countries that has come back to haunt us," he said.
The former Labour mayor of London said as a result any military action to halt the civil war in Syria or destroy Isis would have to be done by other countries.
"After the fiasco of Afghanistan and Iraq, Britain and America and France are just not credible in this. If we are to defeat Isis we've got to have a coalition of the UN. It's got to be Chinese troops, Russian troops, Brazilian, South African. It can't just be the West intervening in the Middle East, largely because of its oil interests," he said.
Cameron told BBC Radio 4's Today programme this morning he will not hold a vote on extending British military action into Syria until he knows he has the support to get it through because failing would be "damaging" for Britain's "reputation in the world".
He said: "Isil don't recognise a border between Iraq and Syria and neither should we. But I need to build the argument, I need to take it to Parliament, I need to convince more people."
Victims of the Paris attacks named
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Open Image ModalLamia Mondeguer
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Open Image ModalMarie Mosser
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Open Image ModalManu Perez
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Open Image ModalMatthieu Giroud
(05 of108)
Open Image ModalThomas Duperron
(06 of108)
Open Image ModalChristophe Lelluche
(07 of108)
Open Image ModalClaire Camax
(08 of108)
Open Image ModalElsa Delplace
(09 of108)
Open Image ModalRomain Didier
(10 of108)
Open Image ModalRomain Dunay
(11 of108)
Open Image ModalAnne Guyomard
(12 of108)
Open Image ModalFanny Minot
(13 of108)
Open Image ModalPierro Innocenti
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Open Image ModalQuentin Mourier
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Open Image ModalPrécilia Correia
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Open Image ModalGermain Ferey
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Open Image ModalNicolas Classeau
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Open Image ModalMaxime Bouffard
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Open Image ModalKheireddine Sahbi
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Open Image ModalElif Dogan
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Open Image ModalMilko Jozic
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Open Image ModalMarie Lausch
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Open Image ModalAurélie de Peretti
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Open Image ModalHalima Saadi and Houda Saadi
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Open Image ModalQuentin Boulenger
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Open Image ModalMathieu Hoche
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Open Image ModalJuan Alberto González Garrido
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Open Image ModalLuis Felipe Zschoche Valle
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Open Image ModalElodie Breuil
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Open Image ModalFrançois-Xavier Prévost
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Open Image ModalLola Salines
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Open Image ModalThomas Ayad
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Open Image ModalNick Alexander
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Open Image ModalValentin Ribet
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Open Image ModalGuillaume Decherf
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Open Image ModalNohemi Gonzalez
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Open Image ModalCedric Mauduit
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Open Image ModalAsta Diakite
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Open Image ModalFabrice Dubois
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Open Image ModalValeria Solesin
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Open Image ModalDjamila Houd
Caroline Prenat(42 of108)
Open Image ModalEric Thome(43 of108)
Open Image ModalMarie Lausch and Mathias Dymarski, both from Metz(44 of108)
Open Image ModalPrécilia Correia(45 of108)
Open Image ModalMohamed Amine Benmbarek(46 of108)
Open Image Modal(47 of108)
Open Image Modal Maud Serrault
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Open Image ModalLudovic Boumbas
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Open Image ModalHalima Saadi
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Open Image ModalHouda Saadi
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Open Image ModalStephane Albertini
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Open Image ModalArmelle Pumir Anticevic
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Open Image ModalAnne-Laure Arruebo
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Open Image ModalThomas Ayad
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Open Image ModalChole Boissinot
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Open Image ModalQuentin Boulenger
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Open Image ModalCiprian Calciu
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Open Image Modal Baptiste Chevreau
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Open Image ModalVéronique Geoffroy de Bourgies
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Open Image ModalNicolas Degenhardt
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Open Image ModalAlban Denuit
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Open Image ModalVincent Detoc
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Open Image ModalManuel Dias
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Open Image ModalGregory Fosse
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Open Image ModalCedric Gomet
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Open Image ModalChristophe Foultier
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Open Image ModalJulien Galisson
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Open Image ModalSuzon Garrigues
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Open Image ModalMayeul Gaubert
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Open Image ModalPierre-Yves Guyomard
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Open Image ModalOlivier Hauducoeur
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Open Image ModalFrederic Henninot
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Open Image Modal Pierre-Antoine Henry
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Open Image ModalRaphael Hilz
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Open Image ModalNatalie Jardin
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Open Image Modal Hyacinthe Koma
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Open Image ModalThibault Rousse Lacordaire
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Open Image ModalGilles Leclerc
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Open Image ModalGuillaume Le Dramp
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Open Image ModalMarion and sister Anna Pétard-Lieffrig
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Open Image ModalAntoine Mary
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Open Image ModalIsabelle Merlin
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Open Image ModalCecile Misse
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Open Image ModalVictor Munoz
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Open Image ModalJustine Moulin
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Open Image ModalChritophe Mutez
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Open Image ModalHelene Muyal-Leiris
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Open Image ModalFranck Pitiot
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Open Image ModalBertrand Navarret
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Open Image ModalChristopher Neuet-Shalter
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Open Image ModalDavid Perchirin
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Open Image Modal Michelli Gil Jaimez
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Open Image ModalLacramioara Pop
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Open Image ModalSebastien Proisy
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Open Image ModalRichard Rammant
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Open Image ModalEstelle Rouat
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Open Image ModalPatricia San Martin Nunez
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Open Image ModalSven Silva
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Open Image ModalJean-Jacques Kircheim
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Open Image ModalFabian Stech
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Open Image ModalAriane Theiller
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Open Image ModalOlivier Vernadal
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Open Image ModalLuis Felipe Zschoche Valle
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Open Image ModalMarion Jouanneau
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Open Image ModalLola Ouzounian
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Open Image ModalEmmanuel Bonnet,
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Open Image ModalYannick Minvielle
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Open Image ModalThierry Hardouin