The complete list can be found in Wikipedia 'Timeline of United States military operations' which uses CIA-based sources and a list published by the 'Committee on Foreign Affairs'.
On a side note, no social theory (as opposed to biological ones) has ever been proposed to sufficiently explain human nature and how to prevent wars and imperialism. Despite the invention of internet and iphone, we are still lagging behind in the humanties. We still fight wars and attempts of imperalism with wars and attempted imperialism. That's why Noam Chomsky hit a nerve when he proclaimed: "The United States is a Leading Terrorist State".
Thanks to Wetoldyouso1 for editing this video. It was done with Windows Movie Maker. All rights reserved.