Tony Blair has claimed violent Islamic extremism has "outspent, outmanoeuvred and out-strategised" the West.

He said too many people had accepted extremists' claims that military action was taken against Muslim countries following the 9/11 attacks because the West supported Israel and Jews rather than Palestinians and Muslims.

Speaking in New York, the former Prime Minister warned that extremism could not be defeated "without defeating the narrative that nurtures it". He said moderate Muslims were being undermined by the West's unwillingness to tackle extremists' arguments.