etc?

No, I have no idea, why don't you tell me?

Is it 240 million?

World War 2 killed 3% of the world's population at the time. That was about 75 million people, but 3% of today's population would be 240 million people.

But there are only 411 million people in the whole Middle East...

I was living in New York City at the time of 9/11, so I saw it with my own eyes, but I am student of history.

If you use the word "massive damage" for 9/11, what do you call the US bombing of North Korea killed at least a million people and destroyed 85% of the buildings in that country?

Or "Operation Freedom Deal" where the US carpet bombed Laos and Cambodia, completely peaceful countries that have always been friendly with the United States, killing more than 100,000?

America is capable of causing orders of magnitude more "massive damage" than those Bronze Age countries that so terrify you.

Consider that those places have no significant weapons or arms manufacturing and buy almost all their weapons from Western countries, the problem could be solved overnight: the West could simply refuse to sell them weapons!

They don't because: https://en.wikipedia.org/wiki/Washington_Generals