High Quality Content by WIKIPEDIA articles! Opposition to the decade-long Afghanistan war stems from numerous factors - these include the view that the U.S. invasion of Afghanistan was illegal under international law and constituted an unjustified aggression, the view that the continued military presence constitutes a foreign military occupation, the view that the war does little to prevent terrorism but increases its likelihood, and views on the involvement of geo-political and corporate interests. Also giving rise to oppposition to the war are the high level of civilian casualties, the cost to taxpayers, the decades of war inflicted on Afghans, the length of the war to date, and the estimates by many that it could last for many more decades.