Examination of Verse 33 of Surat al-Ma'ida:
The subject we have particularly stressed in all the verses about warfare is also noticeable in this verse. The characteristics of the community to be fought against are set out in great detail here: they wage war on God and His Messenger and go about the world corrupting it. These people do not merely engage in physical attacks on Muslims; they also spread corruption across the world. The verse is speaking of a community that represents a problem for the whole world, that everyone regards as a perverse, corrupt and warlike society.
As in all wars, killing is possible in resisting a community that has actively declared war on Muslims, so long as it is a last resort, and one of the measures that can be imposed is to force those people from their lands. To put it another way, according to the verses of the Qur’an, Muslims are permitted to do things that would normally be forbidden – killing and forcing people into exile – only in the event of such a state of war.