Yes, there are places in the middle east where Christians and Muslims live as neighbours, however, the Quran literally promotes violence against people who are not of "the book" (Christians, Jews, Muslims)

“God’s curse be upon the infidels! Evil is that for which they have bartered away their souls. To deny God’s own revelation, grudging that He should reveal His bounty to whom He chooses from among His servants! They have incurred God’s most inexorable wrath. An ignominious punishment awaits the unbelievers.” Quran 2:89-2:90

“When the sacred months are over slay the idolaters wherever you find them. Arrest them, besiege them, and lie in ambush everywhere for them.” Quran 9:5

There's also a verse that doesn't seem very friendly of Christians or Jews:

“Believers, take neither the Jews nor the Christians for your friends. They are friends with one another…” Quran 5:51

“The unbelievers among the People of the Book [Bible] and the pagans shall burn for ever in the fire of Hell. They are the vilest of all creatures.” Quran 98:6