There is a tradition among some peace activists of striking a pose of annoyed indifference to the question of how to get out of an unpopular war. "There are three ways to get out," goes one waggish response. "Air, land, and sea."
This is funny and emotionally satisfying, and also represents a truth for peace activists: ending the war is a first principle, not something contingent on whether a particular means of doing so satisfies someone else's notion of what is practical.
On the other hand, peace activists can't be satisfied with being right; they also are morally compelled to try to be effective. And part of being effective is giving consideration to, and seeking to publicize, arguments are likely to end the war sooner rather than later. It's not likely, for example, that discussing ways in which the war might be useful for the long-term maintenance of the "capitalist world system" will turn the Washington debate against war in the short run. If, on the other hand, central to the official story is a claim that the war is a war against Al Qaeda, but senior U.S. officials publicly concede that there is no significant Al Qaeda presence today in Afghanistan, that is certainly a fact worth knowing and spreading.