He also spoke about the the "absurdity" of spending billions of dollars on security against an ideology which is being "advocated" in the schools and institutions of "countries with whom we have intimate security and defence relationships".

On the issue of Syria, Mr Blair said he understood the UK's reluctance not to take military action, but he would have pushed for the imposition of no-fly zones had he still been in office two years ago.

"I know what the difficult consequences are of intervention, but if you look at Syria you see the consequences of non-intervention, and non-intervention there is something for which we will pay a very heavy price."

On the issue of Israel Mr Blair said:

In the centre of this maelstrom, is Israel. Its alliance with the USA, its partnership with leading countries of Europe, and the fact that it is a Western democracy, mean that its fate is never going to be a matter of indifference. Over these past years, with considerable skill, the Israelis have also built up relationships with China and with Russia. These aren't the same as their long standing Western alliances but they have significance. Were the Israelis to be pulled into a regional conflict, there is no realistic way that the world could or would want to shrug it off. For the moment, Israel has successfully stayed aloof from the storm around it. But the one thing the last few years has taught us (and them) is that we can expect the unexpected.

And on Islam:

For the last 40/50 years, there has been a steady stream of funding, proselytising, organising and promulgating coming out of the Middle East, pushing views of religion that are narrow minded and dangerous. Unfortunately we seem blind to the enormous global impact such teaching has had and is having. Within the Middle East itself, the result has been horrible, with people often facing a choice between authoritarian Government that is at least religiously tolerant; and the risk that in throwing off the Government they don't like, they end up with a religiously intolerant quasi-theocracy.

Take a step back and analyse the world today: with the possible exception of Latin America (leaving aside Hezbollah in the tri-border area in South America), there is not a region of the world not adversely affected by Islamism and the ideology is growing. The problems of the Mid East and North Africa are obvious. But look at the terror being inflicted in countries – Nigeria, Mali, Central African Republic, Chad and many others – across Sub Saharan Africa. Indeed I would argue that that religious extremism is possibly the single biggest threat to their ability to overcome the massive challenges of development today. 

The full speech can be found here.