In all fairness to those who say Islam is not a peaceful religion... there is truth to it... Islam is not buddhism... we do have such a thing as Jihad i.e Armed conflict for the sake of ideology...
but then all that is for justice and fair treatment... Its a different matter that some Muslims are using Islam to spread senseless violence and terrorism etc...
As an example... it was a Christian delegation that came to Caliph Umar and asked him to send his army to Palestine to protect them from the Romans who were oppressing the people living there... So Palestine was liberated by Muslims at the request of Christians being oppressed there... Sometimes to prevent violence, one has to violently stop the aggressors...
a) Sake of Ideology - Can you please tell me what is the ideology? To save Islam? To stop the spread of Paganism, as your Maujlvis would tell you?
So, what was the Ideology of Nadir Shah or Bakhtiyar Khalji? What was Aurangzeb Alamgir doing with destruction of the Vishwanath Temple of Kashi?
To save Islam? To stop spread of Paganism?
Most will say Islamic Iconoclasm. And religious bigotry.
b) Hassan Nisar says in one of his interviews "Gaddar Islam" me paida hote hain" There is some truth to it, it requires a special atmosphere if "Distrust" and "Mischief"..
People, who do not know history, particularly in India, would be astonished to know that Shah Jahan, one of the most benevolent of all Sultans also conspired against his own kinsmen.
Aurangzeb killed Murad Baksh, Shah Shuja and Dara Shikoh....throughout annals of human history, we can find these examples.
What were they fighting for? Against Infidels? Saving Islam? Stopping the spread of Paganism?