You know, of course, POWs arent criminals, dont get trials or get to see lawyers. "Inniocent until proven" is irrelevant to the issue.Refer to the 3rd Geneva Convention Articles 5 & 103.
http://www.icrc.org/ihl.nsf/WebCONVFULL?OpenViewArt. 5 - "Should any doubt arise as to whether persons, having committed a belligerent act and having fallen into the hands of the enemy, belong to any of the categories enumerated in Article 4, such persons shall enjoy the protection of the present Convention until such time as their status has been determined by a competent tribunal."
Art. 103 - "Judicial investigations relating to a prisoner of war shall be conducted as rapidly as circumstances permit and so that his trial shall take place as soon as possible. A prisoner of war shall not be confined while awaiting trial unless a member of the armed forces of the Detaining Power would be so confined if he were accused of a similar offence, or if it is essential to do so in the interests of national security. In no circumstances shall this confinement exceed three months."
Further, there is no world body that enforces international law - each state is responisble for protecteing and exercising its rights under same. If another coutnry violates a treaty they signed with the US, then the US needs to act toprotects its rights under that treaty - there isnt anyone we can go to for "arbitration".http://www.un.org/law/-
International Court of Justice - "The International Court of Justice is the principal judicial organ of the United Nations. Its seat is at the Peace Palace in The Hague (Netherlands). It began work in 1946, when it replaced the Permanent Court of International Justice which had functioned in the Peace Palace since 1922. It operates under a Statute largely similar to that of its predecessor, which is an integral part of the Charter of the United Nations."
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International Criminal Court - "The International Court of Justice at The Hague handles only cases between States, not individuals. Without an international criminal court for dealing with individual responsibility as an enforcement mechanism, acts of genocide and egregious violations of human rights often go unpunished."
- Others, including a whole section about treaties.
See POW, above.Again, Refer to the 3rd Geneva Convention Articles 5 & 103.
As an interesting note regarding the "usefulness" of the UN:
"One of the primary objectives of the United Nations is securing universal respect for human rights and fundamental freedoms of individuals throughout the world. "