[In the name of God, the Most Gracious, the Most Just.]
Look, in Quran does not say anything like that, maybe you have misunderstood it. If we were for example to start WW3 with intention to exterminate Jews we would be like Adolf Hitler, right? He is the one who wished to exterminate Jews and that is not correct at all. Islam is a religion of peace and it is against violent. God Almighty Says:
”Fight in the way of God those who fight you but do not transgress. Indeed. God does not like transgressors.” [**(Q2:190) **]
In here it means that God orders us only to fight in self defense only.
”Kill the idolaters wherever you find them, and capture them, and blockade them, and watch for them at every lookout...” (Quran 9:5).
The “idolaters” (Arabic: mushrikeen) were those Meccan “pagans” who had declared war against Muhammad and his community. The Meccan oligarchs fought against the Prophet’s message from the very beginning. When they realized that the flow of converts to Islam was increasing, they resorted to violent oppression and torture of the Prophet and his followers. The Prophet himself survived several assassination attempts, and it became so dangerous for the Muslims in Mecca that Muhammad sent some of his companions who lacked tribal protection to take asylum in the Christian kingdom of Abyssinia. After 13 years of violence, he himself was compelled to take refuge in the city of Medina, and even then the Meccans did not relent in their hostilities. Eventually, various hostile Arab tribes joined in the fight against the Muslims, culminating in the Battle of the Trench, when 10,000 soldiers from many Arab tribes gathered to wipe out the Muslim community once and for all. As we know, the Muslims survived these challenges and eventually went on to establish a vast civilization.
If the enemy inclines toward peace, however, Muslims must follow suit: “But if they stop, God is most forgiving, most merciful” (2:192). Also read: “Now if they incline toward peace, then incline to it, and place your trust in God, for God is the all-hearing, the all-knowing” (8:61).
There’s a verse of a Hadith that says that prophet Muhammad of God ordered us to protect People of Book(Jews and Christians).
prophet Muhammad (pbuh) said:
“Whoever kills a mu‘ahid (non-Muslim living under Muslim rule) will not smell the fragrance of Paradise, even though its fragrance may be detected from a distance of forty years.” Narrated by al-Bukhari
So in here it is about a Muslim who kills a non Muslim unjust.
”And if anyone of the Mushrikoon (polytheists, idolaters, pagans, disbelievers in the Oneness of God) seeks your protection then grant him protection so that he may hear the Word of God (the Qur’aan) and then escort him to where he can be secure”. [al-Tawbah 9:6]
In 628 AD, a delegation from St. Catherine’s Monastery came to Prophet Muhammed and requested his protection. He responded by granting them a charter of rights, which I reproduce below in its entirety. St. Catherine’s Monastery is located at the foot of Mt. Sinai and is the world’s oldest monastery. It possess a huge collection of Christian manuscripts, second only to the Vatican, and is a world heritage site. It also boasts the oldest collection of Christian icons. It is a treasure house of Christian history that has remained safe for 1,400 years under Muslim protection.
The promise to St. Catherine:
”This is a message from Muhammad ibn Abdullah, as a covenant to those who adopt Christianity, near and far, we are with them.
Verily I, the servants, the helpers, and my followers defend them, because Christians are my citizens; and by GodI hold out against anything that displeases them.
No compulsion is to be on them. Neither are their judges to be removed from their jobs nor their monks from their monasteries. No one is to destroy a house of their religion, to damage it, or to carry anything from it to the Muslims’ houses.
Should anyone take any of these, he would spoil God’s covenant and disobey His Prophet. Verily, they are my allies and have my secure charter against all that they hate.
No one is to force them to travel or to oblige them to fight. The Muslims are to fight for them. If a female Christian is married to a Muslim, it is not to take place without her approval. She is not to be prevented from visiting her church to pray. Their churches are to be respected. They are neither to be prevented from repairing them nor the sacredness of their covenants.
No one of the nation (Muslims) is to disobey the covenant till the Last Day (end of the world).”
This means that it is not permitted at all for Muslims to fight against Jews and Christians, this is only after Sun Rise from West.
Prophet Muhammad said:
”Beware! Whoever is cruel and hard on a non-Muslim minority, curtails their rights, burdens them with more than they can bear, or takes anything from them against their free will; I (Prophet Muhammad) will complain against the person on the Day of Judgment." (Abu Dawud)
This is just an idea so that you can have a better understanding
I hope it is a good answer.