Therefore...
Therefore, if Muslims want to propagate their religion and doctrine through logical ways and introduce it to non-Muslims, but a group hinders them and their logical and proper propagation so that they may break pens, cut tongues and choke breaths, Islam authorizes its followers to initiate Jihad for the elimination of these hindrances and paving the way for the proper and logical propagation of religion of truth (not imposing it with force and power of sword).
When Islam was imported to Iran, it did not enter this territory for the imposition of ideas on Iranians. Rather, it fought with the Iranian host for the elimination of unreasonable hindrances to the logical propagation of Islam. After overcoming the Sassanian host, it never obliged and compelled people to accept and convert to Islam. On this account, some fire temples were flaming years after the conquest of Iran by Islam, and some people still had their previous religion and doctrine.
However, most of the Iranians who were clever embraced Islam and obeyed its instructions. The Sassanians were the main hindrance to the propagation of Islam in Iran. Eliminating this great hindrance, Islam prepared the situation for the acceptance of Islam by Iranians. Certainly, this type of initial Jihad too is not refuted by the sane of the world.
In general, initial Jihad for extinguishing sedition, preventing rebellion of tyrants and rebels and eliminating hindrances to Islamic propagation is not considered violence. Rather, it is the same Islamic benevolence. It is inferred from above that Islam is the religion of compassion and clemency, and even some of its rulings which may seem violent apparently, are not practical in contradiction with Islamic clemency.
Those who accused this clement religion of violence, are either unfamiliar with Islamic instructions or vindictive enemies who find Islam a hindrance to their illegitimate personal interests and benefits. Objectives of Jihad in Islam War is never regarded as a merit in Islam. Rather, it is believed to be a demerit because of causing destruction, and waste of souls, powers and facilities.
In some Quranic verses, like 65, ‘The Cattle’ surah is called one of the divine chastisements among earthquakes, thunder, and heavenly or earthly calamities. On this account, Islam has instructed to avoid war as far as possible.