U.S. reviews 9/11 documents for possible release

[Spongebob]

But we heard for decades that the "Taliban" are terrorists; but eventually -and pretty surprisingly- the USA began "negotiating" with them:

I think you're forgetting that the original reason the US invaded Afghanistan was to destroy terrorist training camps and then it sort of morphed into a campaign to rid the country of the Taliban because of the way it treated the citizens and its support of terrorism.  I'm not actually sure about the Taliban's designation.  Originally it was a sort of "government" of Afghanistan after the Soviets were ousted.

I think the U.S is confusing who is the real "terrorists" and who are the "freedom fighters" who stood like mountains against the USSR followed by the invasion of western countries. The Taliban -for example- were the terrorists of yesterday in the eyes of the U.S who became "not really terrorists" and were even allowed to open diplomatic offices in countries like Qatar !

The Taliban had nothing to do with "standing tall" against the Soviets.  They weren't even in the country until much later.

Once the Soviets withdrew, US interest in Afghanistan slowly decreased over the following four years, much of it administered through the DoD Office of Humanitarian Assistance, under the then Director of HA, George M. Dykes III. With the first years of the Clinton Administration in Washington, DC, all aid ceased. The US decided not to help with reconstruction of the country, instead handing the interests of the country over to US allies Saudi Arabia and Pakistan. Pakistan quickly took advantage of this opportunity and forged relations with warlords and later the Taliban, to secure trade interests and routes. 

https://en.wikipedia.org/wiki/Soviet%E2%80%93Afghan_War

Then just like I can't call "nuclear attacks" terrorism; you must also admit -considering the 2003 Iraq invasion which turned out to be a scandal for WMDs that dont exist and the ranking of the Taliban as terrorists to come back after decades and admit they arent and deserve to open diplomatic offices- to be a "loose ; ambiguous charge by the U.S"; and better: "the American government uses the loose, ambiguous term "terrorism" to stain its foes or anybody it doesn't like", which is quite disgusting, outrageous and a low act if you ask me; satanic to the core. Hundreds of thousands died in the worst ways because of the U.S actions.

If your arguments were coherent you might be able to make a valid point.  I, and a lot of Americans, will quickly agree that the invasion of Iraq was a foolish politically motivated move and it's ultimately what cost Republicans control of congress.  So if you want to find agreement, bash that Iraq invasion all you want.  I'm right there with you.  Most of your other arguments are basically nonsense.

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There are weapons far more destructive to "demons" that use atomic weapons.
Just like Atom bombs were created "out of a glimpse of thought in Einstein's mind"; and anti-nuclear would also be created.

Wow, you are terrible at this.  Einstein played almost no part in the creation of nuclear weapons, or splitting the atom at all.  His famous equation E=Mc2 theoretically predicts the vast energy held within the nucleus of an atom, but the most he did was write a letter to FDR suggesting the US develop this technology before the Nazi's did.  You are thinking of Robert Oppenheimer.