Are we missing a key point in the war on terrorism?

It seems that it is becoming mainstream thought, that the main goal of Islamic terrorists, is to spread Islam and Sharia Law throughout the world.
I do not doubt that there may be a small sect that feels this way, but are we overlooking a very important fact in the cause of terrorist attacks?

It is easy for us to call people who attack us, terrorists, but are we overlooking the fact that war is two-sided, and when we are bombing 7 countries, over 13 years, there will obviously be groups that fight back, and it just so happens that all 7 countries are Muslim countries, so of course that will be used to unify people?

Here are quotes from several attackers since, and including 9/11:
French Shooter
“In a recording of what followed, a man the station identifies as Coulibaly holds a dialogue with others—apparently hostages—in which he says he attacked because the French military has attacked Muslims in the Middle East and Mali, including ISIS militants.

“I was born in France. If they didn’t attack other countries, I wouldn’t be here,” a voice says in RTL’s recording.”

Boston Bomber

“He equated the three people who were killed in the marathon bombings and the more than 250 others who were injured to ‘collateral damage’ like the thousands of innocent Muslim victims of American wars across the globe.
‘When you attack one Muslim, you attack all Muslims,’ he reportedly wrote.”

Underwear Bomber
“In quick response to some of the things that have been said, I say my life and the lives of Muslims have also changed due to the attacks on innocent civilians,” he added.”

Shoe Bomber:
“I further admit my allegiance to Osama bin Laden, to Islam, and to the religion of Allah. With regards to what you said about killing innocent people, I will say one thing. Your government has killed 2 million children in Iraq. If you want to think about something, against 2 million, I don’t see no comparison.

Your government has sponsored the rape and torture of Muslims in the prisons of Egypt and Turkey and Syria and Jordan with their money and with their weapons. I don’t know, see what I done as being equal to rape and to torture, or to the deaths of the two million children in Iraq.

So, for this reason, I think I ought not apologize for my actions. I am at war with your country. I’m at war with them not for personal reasons but because they have murdered more than, so many children and they have oppressed my religion and they have oppressed people for no reason except that they say we believe in Allah.

This is the only reason that America sponsors Egypt. It’s the only reason they sponsor Turkey. It’s the only reason they back Israel.

As far as the sentence is concerned, it’s in your hand. Only really it is not even in your hand. It’s in Allah’s hand. I put my trust in Allah totally and I know that he will give victory to his religion. And he will give victory to those who believe and he will destroy those who wish to oppress the people because they believe in Allah.

So you can judge and I leave you to judge. And I don’t mind. This is all I have to say. And I bear witness to Muhammad this is Allah’s message.”

Bin Laden’s Letter to America
While seeking Allah’s help, we form our reply based on two questions directed at the Americans:

(Q1) Why are we fighting and opposing you?
Q2)What are we calling you to, and what do we want from you?

As for the first question: Why are we fighting and opposing you? The answer is very simple:

(1) Because you attacked us and continue to attack us.

I am by no means a “terrorist sympathizer,” but remember back during the 2004 election, a certain republican candidate talking about what the CIA calls “blowback,” and how bombing and overthrowing middle eastern governments will lead to an increase in terrorists, and threats against us and other nations allied with us.
This idea has seemed to completely escape the realm of mainstream thought, and I think it is time to discuss the unintended consequences of our foreign policy.

What do you guys think?