I consider it foolish to be fighting a war and not to be concerned with the number of forces you are ultimately up against.
Im not really that good at statistics, hopefully someone else can add to this, but I will give it a shot.
There are roughly 1.2 Billion Muslims in the world.
Depending on who you ask, 5-10% of the Muslims worldwide are considered fundamentalists ie. extremists. (120 Million) These are the ones that you will not be able to make peace with or be able to reason with. These people are fighting for an idealogy and are willing to die for their cause. Many of these individuals from various Muslim countries and the West will be drawn to Iraq (the battlefield) to confront the "enemy"
Of that number (120 Million), roughly 50% are woman and so that leaves 60 million. There are a lot of children to consider as well which further reduces the number of military aged men. A conservative estimate might be in the range of 10-15 million.
And so you have 10-15 Million fighters worldwide supported financially and idealogically by 105-110 Million fundamentalists worldwide.
Once leaders are identified the number becomes further reduced to roughly 3-5 Million. These are the ones who must be killed.
A lot of people think that killing so many of them will just create new terrorists. I would dispute that. From my own personal experience I dont see that happening. Moderate Islam ultimately can play a role in absorbing those former extremists who no longer find themselves receiving moral support or any form of leadership in their quest for "Jihad". Therefore the solution involves taking the out the upper and mid level leadership of militant Islam.
An "ustaz" in a Madrasah only controls roughly 20-30 individuals. These groups of 20-30 individuals aged from around 12-16 years old are relentlessly drilled day and night weakened by inadaquate food and sleep deprivation. A typical meal for dinner might be a hard boiled egg, rice with a few condiments. A hungry child will be told that nourishment can be obtained from prayer and from the Quran. "Tajud" Prayers (Night Prayers) are performed and these children are woken in the middle of the night to pray until sunrise.
What I found particually interesting is that the "Uztaz" will typically ask the children to pray not for themselves but for the leader of the Madrasah...asking Allah to aid the leader in leading the children... and this is where the power of suggestion starts to come into play. When the children are asked to do something later by the leader of the Madrassa they firmly believe that they are doing what Allah wills them to do and not what the leader wills them to do.
The methodology to retrieving these individuals is similar to deprogramming someone who has been brainwashed. I have had a lot of personal experience with this and found it actually doable on a small scale in the same size groups of 20-30 individuals. Trust becomes a major issue and one must be a Muslim, have an extensive understanding of Islam AND the Bible and be able to converse in the local dialect.
And so... there you have it. Sorry for ranting.
"Once leaders are identified the number becomes further reduced to roughly 3-5 Million. These are the ones who must be killed."
Have you analyzed the percentage of how many of those are in the United States actively pursuing their Islamic goals?