After its creation, SEATO quickly became insignificant militarily, as most of its member nations contributed very little to the alliance. While SEATO military forces held joint military training, they were never employed because of internal disagreements. SEATO was unable to intervene in conflicts in Laos because France and the United Kingdom rejected use of military action. As a result, the U.S. provided unilateral support for Laos after 1962. Though sought by the U.S., involvement of SEATO in the Vietnam War was denied because of lack of British and French cooperation.