If we look at the histroy Muslims never fought for the sake of occupying land, they fought just for eliminating the threat that was imposed for them and the religion. In many cases non-muslims tried to fight with strong army against the Muslims but they were failed and then Muslims of that time didn't had other option to fight against such culprits who will again posses threat for them. Allah (SWT) has ordered that don't fight with others until and unless they don't posses threat to their presence.

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~~ Khan ~~
Birds born in cage, thinks flying is an illness.