There is no where written in Quran that you should wage war againt infidels or non muslims if they are not following islam.....
You have a wrong perception about all these and i dont think any mullah or maulvi also propogating that sort of stuffss, might be some people who are fighting and killing innocents but they are using islam as their basis,,,,,
Moreover, Islam regards whatever property or money considered by non-Muslims as valuables%u2014according to their faiths%u2014and pledges to protect them, even if they pose no real value to Muslims. if non-Muslims did no harm to Muslims and they were peaceful instead, then Muslims would have no right to fight them. Besides, Muslims are ordered to give such a kind of non-Muslims their due rights and do them justice because Allah likes those who are just. Nevertheless, the cases where Muslims are allowed to fight against non-Muslims are when they start fighting first, when they violate the privacy of Muslims, expel them from their homes, or hinder them from conveying the message of Islam. Also, Muslims are permitted to fight against non-Muslims when they confiscate Muslims' right to propagate Islam through providing clear evidence and proof. Physical Jihad is allowed when non-Muslims wage war against Muslims, or when they kill Muslim callers,,,,