JW Leaks has published the June 3, 2013, United Nations General Assembly Analytical Report on Conscientious Objection to Military Service.
Page 3, paragraph 4, of the report states:
"The following non-governmental organizations responded: the Associazione Comunita Papa Giovanni XXIII, the Centre for Civil and Political Rights, the European Bureau for Conscientious Objection, the European Organisation of Military Associations, Forum 18 News Service, the German Institute for Human Rights, Human Rights Watch, the International Fellowship of Reconciliation, Jehovah’s Witnesses, the Quaker United Nations Office, the Russian NGO Soldiers’ Mothers of St. Petersburg, the Union of Conscientious Objectors, and War Resisters International."
This 17 page report deals substantially with Jehovah's Witnesses.
Also published by JW Leaks is a submission made to the United Nations by The European Association of Jehovah's Christian Witnesses in relation to Tajikistan (dated June 12, 2013).