As far as I know (this comes from owning and reading a Qur'an myself), there are various verses advocating forcing conversion through violence, but never directed at non-combatants (so blowing up civilian busses is a no-no). Also, remember that Christians and Jewish people have historically always been treated in a special way by Muslims (being "people of the book") and, apart from paying special taxes, have lived better lives under Muslim rule (like the Jews who left Europe with the Muslims when they were defeated by the French, since living under Islam was much better than living under Christianity).
If Christians and Muslims simply believed what the Qur'an claims Jesus said ("and Allah is my Lord and your Lord, so worship him, this is the Straight Path.") then there would be less conflict since ultimately both RELIGIONS do not like strife, but the POLITICS of their believers have totally different ideas.