Sorry, there are no parallels between the Second World War and radical Islam. We ain't fighting a conventional industrialized power. This "war" (using the term loosely) is as much psychological, economic, educational and political as it is military.
There are major parallels. Postwar Germany and Japan have had civil governments, which prevented any radicals from renewed interest in war with the US.
Why did they do so? Because they knew their "political" survival depended on it.
They used "education" to convince their citizens, that cooperation with the US was beneficial.
The US used "economics" to reinforce the power of force and might.
Finally, the whole package comes together as a powerful, persuasive "psycholigical" manipulation.
For the whole thing to work, first they had to be defeated militarily. Get the chickens and eggs in order, okay?
You are naive to contend that arabs/muslims will respond to reason more than they will respond to force.