It is tragic, yet despite it all - God knows what He’s doing. He will take what was meant for evil & use it for good.
I do understand the Taliban murderers - they serve their father - the devil. And the devil always comes to steal and to kill...and he uses his followers to exact his agenda.
Yes, I do believe these people weren’t “missionizing” as you say. As believers, they knew they could simply live-out the love of Christ, pray for the lost, and deliver healing in the region. They also knew what Muslims don’t know - that individuals cannot “convert” anyone to Christianity. They knew that it is only the Father Who can draw men to Himself.
Some months ago there was a blog entry ascribed to a Marine stationed in Afghanistan (at least supposedly) wherein he, among other things, says the Taliban are purely murderers and murder and killing is all they understand. This story makes me believe that.
That said - this is all part of His plan.