Some have proposed that the actual motive for the United States-led Western invasion of Afghanistan in 2001 was Afghanistan's importance as a conduit for oil pipelines to Afghanistan's neighbouring countries, by effectively bypassing Russian and Iranian territories, and breaking the Russian and Iranian collective monopoly on regional energy supplies. Others have argued that the theoretical pipeline was not a significant reason for the invasion because most Western governments and their respective oil companies preferred an export route that went through the Caspian Sea to Azerbaijan then to Georgia and on to the Black Sea instead of one that goes through Afghanistan.