Neuro-Semantic Programming

It is really some service and sacrifice for the US to do this:

http://www.aljazeera.com/news/middleeast/2014/11/us-deploy-1500-additional-troops-iraq-2014117201747448497.html

However, Iraq is a nation that is at war with itself:

http://www.aljazeera.com/news/middleeast/2014/11/several-killed-attacks-across-iraq-20141181258205876.html

The question is flows from this:

http://www.aljazeera.com/news/middleeast/2014/11/us-deploy-1500-additional-troops-iraq-2014117201747448497.html

Is it believable that the very perpetrators of the above bombing will not attack these newly deployed troops - IF THEY HAVE THE CHANCE?

What is the statistical probability that they will NEVER have the opportunity to do so?