9-11 Conspiracy Theory
The main 9-11 conspiracy theory is that the collapse of the Twin Towers and 7 World Trade Center were the result of controlled demolitions rather than structural failure due to impact and fire.
Another conspiracy theory is that the Pentagon was hit by a missile launched by elements from inside the U.S. government or that a commercial airliner was allowed to do so via an effective stand-down of the American military.
conspiracy theorists believe the motives for such actions include justifying the invasions of Afghanistan and Iraq to advance their geostrategic interests, such as plans to construct a natural gas pipeline through Afghanistan.
Other conspiracy theories revolve around authorities having advance knowledge of the attacks and deliberately ignoring or assisting the attackers.