Depends on the type of warfare I would think. There are so many types of conflict now that it's difficult to make a blanket statement and both sides now play a different game. A radical suicider can cause mayhem but if the enemy are known and localised then airstrike technology will win the battle.
For now, our favorite extremists are limited in their firepower but it would be difficult to argue that, given access to modern warfare tech, they would be any less of a force than an 'atheist army'.
For now, our favorite extremists are limited in their firepower but it would be difficult to argue that, given access to modern warfare tech, they would be any less of a force than an 'atheist army'.