Right using this Huff Post survey as an example
"Just 3% of Egyptian expressed a positive opinion of the IS, only 5% of Saudis, and under 1% of Lebanese respondents showed any support for the group. It does not mean, the researchers point out, that there is absolutely no support for IS in those countries as the small percentages add up to around 1.5 million people in Egypt, 500,000 in Saudi Arabia, and a few thousand in Lebanon".
Let's use Egypt. In the first case, I'd dispute their maths (I suspect that the Washington Institute have applied some cleaning mechanism to their sample field as I'm sure they wouldn't make the mistake of saying that the population of Egypt is 50m). Anyway, the CIA yearbook has the population of Egypt at 88,487,396 (which is what I'll use as it's only illustrative), which means 3% is approximately 2.6m (2,654,621 to be precise)
So we have 2,654,621 in a population who have identified as expressing "a positive opinion". Let's model 1% of these translating this positive opinion into a militant action. That equates to some 26,546 potential
Jihadis.
Now let's say you introduce a controversial policy, and this results in 2% from this 2.6m finding themselves inclined to convert their sympathy into an action. 53,000 jihadis are suddenly lurking within your own borders. Frightening isn't it? Well maybe if you're Egyptian. Like I said (as we can probably relate to the IRA in terms of scale) they were about 300-400 strong. This is about 150 times bigger. The UK's standing army is only 80,000 strong.
"
But the report is in stark contrast with an August poll on the same topic for ICM, which found that 7% of citizens responded favourably to IS in Britain. To put that result in context, just 5% of the British population are Muslim, meaning a vast number of those surveyed feeling either "very" or "somewhat" favourably towards IS were not Muslim."
Now I have to confess I'm more than just a bit sceptical about the assertion that 7% of the UK's population is sympathetic to ISIL. We're being asked to believe that the entire muslim population of Britain, plus 2% others are included, but let's model it anyway.
UK population is 64,088,222. The poll indicates 2% have a "very favourable" view of ISIL = 1,2817,764
If just 1% of this subsequently decides to engage in direct militant activity, it equates to some = 12,817
Again, apply the IRA benchmark of 300-400, and these are people who are much more driven by body count than the IRA were, and are prepared to martyr themselves presumably.
Dare we perform another calculation?
9 terrorists in Paris killed 130 victims. A ratio of 14 to 1. Now you can rightly say that we can't possibly extrapolate anything meaningful from this. You'd be right. But I'm only doing this for illustrative purposes rather than acting as a predictor. 12,817 terrorists achieving the same sort of kill rate is equivalent to some 179,000 victims (about 3 times the number of British civilians killed in WW2).
Now the dynamics of this is that they would expect to set off retalitory pre-emptive actions (well on that kind of kill ratio they will - I think we'd have accept that civil war had broken by now) so the 1% of those who are sympathetic could grow quite quickly as innocents get targeted. I'd also expect that we would have reverted to internment before we got that close however
Now all of this is borderline stupid in places you might say? I wouldn't completely disagree, but I think it goes to show the potential firestorm you start playing with if you lose an appreciation of the data and the sorts of actions it can translate into from motivated and driven minorities. How much use are 98% of the passive population to you now etc?
I've said for sometime that the armies of Europe are likely to be needed back home, and to this end we really ought to be looking for proxy's in the actual theatre itself as our prefered option of choice
I should say I used 1% for ease of calculation, and readily accept that 0.1% is more likely to be nearer the truth and my own alarmist figures are at least wrong by 10 fold. It's more a case of trying to illustrate how this thing could spin out of control if we lose it though