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The Quran contains at least 109 verses that call Muslims to war with nonbelievers for the sake of Islamic rule..........the verses of violence in the Quran are mostly open-ended, meaning that they are not restrained by historical context contained in the surrounding text (although many Muslims choose to think of them that way). They are part of the eternal, unchanging word of Allah, and just as relevant or subject to interpretation as anything else in the Quran.
........it is important to note that the problem is not bad people, but bad ideology.
ANSWERS BASED ON AHMADIYYA-MUSLIM UNDERSTANDINGS
Peace be on you.
If Quran meant to fight and kill all of non-Muslims, then why are many verses praising pious people of previous religions, though it call itself the final and perfect message. But it acknowledges pious people of other previous religions too.
For example:
[1:2] All praise belongs to Allah,
Lord of all people / all the worlds,
[2:63] Surely, the Believers, and the Jews, and the Christians and the
Sabians — whichever party
from among these truly believes in Allah and the Last Day and does good deeds — shall have their reward with their Lord, and no fear
shall comeupon them, nor shall they grieve.
[4:163] But those among them who are firmly grounded in knowledge, and the believers, believe in what has been sent down to thee and what was sent down before thee, and
especially those who observe Prayer and those who pay the Zakat and those who believe in Allah and the Last Day. To these will We surely give a great reward.
[5:84] And when they hear what has been revealed to this Messenger, thou seest their eyes overflow with tears, because of the truth which they have recognized. They say, ‘Our Lord, we believe, so write us down among those who bear witness.
[7:160] And of the people of Moses there is a party that exhorts
people to truth and does justice therewith.
[22:18]
As to those who believe, and the Jews, and the Sabians, and the Christians, and the Magians and the idolaters, verily, Allah will judge between them on the Day of Resurrection; surely Allah is Witness over all things.
War related verses are specific cases. Remember Islam when Arabs were embroiled in non ending wars. Did it came start more wars? Think please, if you may!
You may read details about such war related verses at
http://www.alislam.org/quran/tafseer/guide.htm?region=E1
Unfortunately, there are very few verses of tolerance and peace to balance out the many that call for nonbelievers to be fought and subdued until they either accept humiliation, convert to Islam, or are killed. Muhammad's own martial legacy, along with the remarkable stress on violence found in the Quran, have produced a trail of blood and tears across world history.
Balance what?
As mentioned above, war-verses are not for 24/7. At that early times, Muslims were being attacked, after long patience of 13 years they were asked for defence, that is it.
[22:40] Permission
to fight is given to those against whom war is made, because they have been wronged — and Allah indeed has power to help them —
[22:41] Those who have been driven out from their homes unjustly only because they said, ‘Our Lord is Allah’ —
And if Allah did not repel some men by means of others, there would surely have been pulled down cloisters and churches and synagogues and mosques, wherein the name of Allah is oft commemorated. And Allah will surely help one who helps Him. Allah is indeed Powerful, Mighty —
[22:42] Those who, if We establish them in the earth, will observe Prayer and pay the Zakat and enjoin good and forbid evil. And with Allah rests the final issue of all affairs.
Fights after Holy Prophet (pbuh) and four Khalifs were mainly because when people accepted Islam in huge numbers in little time, many were not able to get proper training in morals and patience, which caused subsequent problems.
However, as one believes, you have chance to study revival of Islam now in the form of Ahmadiyya Movement in Islam, the second phase of progress through faith, prayers, pen and good acts.
Two Hundred Verses about Compassionate Living in the Quran
http://themuslimtimes.info/2013/10/29/three-hundred-verses-about-compassionate-living-in-the-quran/