they are doing some fighting against some perceived enemies.
Where is element of Forced Conversion to Islam in their actions.
Remember, for 175 Years there was peace between Muslim and non Muslim World.
This peace ended in 1908 when US, UK, Russia attacked Muslims without basis/provocation.
Since then, western armies are regularly visiting Muslim lands for one sided attacks. Only after significant loss of muslim life (millions) and property has happened that this phenomenon of "Osama" surfaced.
So learn to know your part before you sqarely blame others