From the above discussion we conclude that the above verses (9:1-15) is addressing a certain category of disbelievers, namely those who attacked Muslims first, insisted on fighting Islam and nothing stopped them. That case is clearly explained in the verses from 1 to 15.
We also knew that there were exceptions, not all disbelievers are to be fought. Those who did not breach their treaty with the Muslims, those who were seeking Muslims' protection, those who made a treaty with the Muslims al-Masjid al-Haram and of course the disbelievers who repent and became Muslims, then all their deeds were immediately forgiven and they were considered brothers to all the Muslims.
To encourage Muslims to fight back those who are still showing enmity, God started to remind Muslims with the crimes those disbelievers committed against them. verse (9:13) says:
"Would you not fight a people who broke their oaths and determined to expel the Messenger, and they had begun [the attack upon] you the first time? Do you fear them? But Allah has more right that you should fear Him, if you are [truly] believers." (9:13)
Notice here the sentence "Do you fear them? But Allah has more right that you should fear Him, if you are [truly] believers." Some Muslims were afraid to fight the disbelievers, why, because they were outnumbered, so God is encouraging them by saying that they should fear only Him.
The next two verses say: "Fight them; Allah will punish them by your hands and will disgrace them and give you victory over them and satisfy the breasts of a believing people. And remove the fury in the believers' hearts. And Allah turns in forgiveness to whom He wills; and Allah is Knowing and Wise." (9:14-15).
These two verses represent a promise from God that He will grant the Muslims victory and that this war would be God's punishment to that specific category of disbelievers and explains that this victory would "satisfy the breasts of a believing people" and would "And remove the fury in the believers' hearts" which is again a proof of how much injustice they endured on the hands of these arrogant disbelievers which made their hearts full of fury and anger with them.
So when you look at the two verses (9:13-14) in their real context you realize immediately that it is not a call to attack innocent peaceful disbelievers like some people are wickedly trying to convince you, it is actually a call to fight back against the arrogant disbelievers who transgressed without limits so God is telling the Muslims to go and put an end to these continuous violations by fighting.
And let me remind you that God said "fight them" which means two armies against each other both ready and prepared, no sudden attacks, and remember they were given a four months period where they can go around peacefully and be prepared for war, but after these four months Muslims would fight back. Put yourself in the Muslims shoes then, will you REALLY consider this a violent verse calling for blood. Will you still call the Muslims, who were actually the victims here fighting back against their aggressor, a blood thirsty people.
Why would a nation who said they came for the peace of humanity attack for no reason, wouldn't that damage their image in front of all the Arabic tribes and why didn't any of their enemies themselves claim that that war was unfair and that the Muslims were wicked, blood thirst bunch of people. There are no historical records of even one tribe or country that the Muslims fought that said anything about their being attacked for no reason.
You should ask yourself why their enemies THEN did not claim that and why some people NOW are claiming that. The answer is clear once you start looking just a little bit deeper below the surface. Don't be a superficial reader who reads three sentences from a chapter then starts making judgments. Be fair enough to read carefully the whole chapter to see the real context of each and every verse before you judge, and always remember that you yourself can say a word when taken out of context can mean exactly the opposite of what you meant.
Finally, be aware of anyone who brings you sentences without mentioning their context because he is either a brainless parrot or a partial person who does not have the capability to convince you so he is trying to blur your vision by a childish trick that no fair person should fall into.