Islam's is a struggle against idolatry, sexual deviations, plunder, repression, and cruelty. The war waged by [non-Muslim] conquerors, however, aims at promoting lust and animal pleasures. They care not if whole countries are wiped out and many families left homeless. But those who study will understand why Islam wants to conquer the whole world. All the countries conquered by Islam or to be conquered in the future will be marked for everlasting salvation. For they shall live under [God's law].
Ruhollah Khomeini