This article identifies just one little part of history.
Look at history in total (as much total as you can consume), and you quickly find that we humans have developed an ever-increasing ability to kill one another.
I'm not taking sides in the article except to say that the Battle of Tours was indeed a turning point in the expansion of the Muslim empire. It took another 700 or so years to stop it in Europe in Spain and in other fronts across Europe.
You would think we have advanced beyond the stone-age level of annihilating one another instead of sitting at a table nd working through our differences.
We have not.
When you read a true translation of the Holy Quran, you will realize it is impossible to "work through our differences".
There are three options.
They kill all of us.
We kill all of them and destroy every copy of the Holy Quran in the world.
They live in their part of the world and we in ours, with us maintaining a military able to defeat them when they attack.