In multilateral diplomacy --- we learned (courtesy of Petru) that:<br /> In Article 41 of the UN Charter, it states that it has the right, with the agreement of the members, to use non-military measures deemed necessary including “complete or partial interruption of economic relations and of rail, sea, air, postal, telegraphic, radio, and other means of communication, and the severance of diplomatic relations. (United Nations Codification Division, 1945)

I believe this a similar to "diplomacy without arms."

Source author: Marie Betts-Johnson mbj@ipicalifornia.com