Just Wondering

All our enemies of yesteryear--the Germans and Japanese, the  Russians and Chinese, have been/are being recycled as our friends.

Somewhere along the line, the world powers recognized that there is more profit--figuratively and literally--in peace than in war, that it is better to sell goods to each other than to kill the populace and ravage the countryside. 

So when do the Islamic extremists reform their ways and join together with the rest of the world?