What purpose does Islam seek to achieve by Jihad?

The Islamic Jihad can be classified into three categories.
The ‘Initiating’ and ‘Liberating’ Jihad
Allah has prescribed a set of orders and chalked out programmes for the development, freedom, comfort, happiness and prosperity of man, and has entrusted unto His prophets the responsibility of communicating these to the people. Now, if an individual or a group of individuals regard the communication of these orders detrimental to their personal lowly interests and endeavour to obstruct the prophets in fulfilling their divine responsibilities, the prophets possess the right to remove the obstructions lying in their path, initially by utilizing peaceful means and if not possible, then by use of force, in order to acquire for themselves the freedom to propagate (the commandments of Allah).
In other words, in every society, people have the right to listen to those who invite them towards the path of Truth, and possess freedom to accept their invitation. But if some individuals deprive them of their legitimate right and inhibit them from hearing the truth and becoming freed from their mental and social captivity and slavery, the followers of these divine programmes possess the right to utilize every means at their disposal in order to achieve this freedom. It is here that the necessity of the Initiating Jihad in Islam and other divine religions becomes manifest.
Similarly, if some individuals were to compel the believers to revert to their original religion, every means could be employed for repelling such compulsions too.
The ‘Defensive’ Jihad
At times it so happens that a battle is imposed upon an individual or a group such that they find themselves as the object of a calculated and/or a surprise attack. In such an instance, all divine and man-made laws permit the persons attacked to defend themselves and employ every available means to protect themselves. This kind of Jihad is referred to as the defensive Jihad; the battles of Ahzab, Uhud, Mutah, Tabuk, Hunain and some other Islamic battles are examples of this category of Jihad which were defensive in nature.
Jihad for the ‘Eradication of Polytheism and Idolatry’
Although Islam invites the people to select this religion - the last and the most exalted of all religions - nonetheless, it also respects the freedom of belief and it is for this reason that it grants the communities, which possess divine books, sufficient opportunity so that, after study and reflection, they may accept the religion of Islam. But if they do not do so it looks upon them as a confederate and by placing some specific conditions, which are neither intricate nor difficult, endeavours to have a peaceful co-existence with them.
However, the issue of polytheism is different since it is neither a religion nor a doctrine and so it cannot be looked upon with respect and esteem - rather, it is a kind of superstition, deviation and foolishness. In reality, it is a kind of mental and moral sickness, which ought to be uprooted.
The use of the terms 'freedom' and 'respect', in connection with the views of others, is applicable if the views or the beliefs are at least based upon a foundation. However, deviation, superstition and sickness are not something that can be treated as respectable, and it is due to this that Islam has ordered idolatry to be uprooted from the human society, even at the cost of warfare; if idol temples and their evil influences cannot be brought down and destroyed by peaceful means, then they should be uprooted by means of force. [Tafsir-e-Namunah, vol. 2, pg. 15]
From what has been mentioned above, the answer to the venomous propaganda of the Church becomes plainly evident since a sentence more explicit than:
{
لاَ إِكرَاهَ فِي الدِّينِ
}
“There is no compulsion in (acceptance) of the religion.”
which appears in the Qur`an, cannot be found in this regard.
Of course, for the purpose of distortion, these people focus their attention upon the battles of Islam; however, a study of these battles clearly reveal that while some of these were purely defensive in nature, others - that belonged to the category of initiating Jihad - were not initiated with the objective of conquering lands and forcing the people into the religion of Islam but instead, for overturning incorrect and oppressive regimes, and providing opportunity to the people to freely study and review the religion and modes of social lifestyle.
Islamic history is a living testimony to the above, since it has been observed repeatedly that when the Muslims conquered cities they would grant freedom to the followers of other religions (just as they would do to the Muslims) and these people even performed their acts of worship and observed their religious ceremonies unhindered. If a limited tax, by the name of Jizyah, was taken from them, it was for the purpose of providing social security and covering the expenses of the security forces, since their lives, properties and womenfolk were under the protection of Islam.
Those people who deal with the history of Islam, are aware of this reality and even the Christians, who have written books on Islam, have acknowledged this issue. For example, in the book La Civilisation des Arabes we read: “The Muslims were so lenient towards the other communities that the religious leaders of these communities had the permission to organize their own religious gatherings.”
In some historical accounts it has been reported that a group of Christians, who had arrived in the presence of the Noble Prophet for the purpose of research and investigation, performed their religious ceremonies in the Mosque of the Noble Prophet (s.a.w) in the city of Madinah - freely and unchecked![67]
Grand Ayatollah Nasir Makarem Shirazi
Imam reza network