There IS no good in Islam.
Ever.
For any reason.
To believe so is to reason with the devil.
This ‘we just need to understand them’ kind of feel good Christianity is why the Mahgreb, Levant and Anatolia are now Muslim. And have been for over a thousand years.
And the Pastuns are definitely NOT a culture to bring to the west. For any reason.
And ‘spiritual warfare’ doesn’t do squat against Islam. Western Christianity tried that for 500 years. They eventually had to resort to ‘real’ warfare.
As long as a single person on this planet practices Islam, no one on the planet will ever be safe from Islam.
Actually, Agnes, part of the problem is that Eastern Christianity (the main victims of the great jihads) didn't do much in the way of 'spiritual warfare' (if by that you mean evangelization --- preaching the Gospel to the Muslims) --- If I am mistaken, maybe some of the Orthodox brethren who know the history can chime in here ---
And Western Christianity -- with the truly exceptional exception of St. Francis of Assisi in 1219 --- did almost no evangelization to the Muslims at all, unless you count the Spanish Inquisitions --- um--- program amongst the Moriscos in 16th century Spain.
There was no 500-year effort to evangelize Muslims. Where did you get that idea?