Nuremberg Principles

The Nuremberg principles were a set of guidelines for determining what constitutes a War Crime. The document was created by the International Law Commission of the United Nations to codify the legal principles underlying the Nuremberg War Trials of Nazi party members following the Second World War.

They sound about right. The Wikipedia's article makes no mention of the gross violations that were part of the proceedings although it does tell us that:-
QUOTE
US Supreme Court Chief Justice Harlan Fiske Stone called the Nuremberg trials a fraud. "[US prosecutor] Jackson is away conducting his high-grade lynching party in Nuremberg," he wrote. "I don't mind what he does to the Nazis, but I hate to see the pretence that he is running a court and proceeding according to common law. This is a little too sanctimonious a fraud to meet my old-fashioned ideas."
UNQUOTE
Stone was to the point and being a very senior judge he knew what he was talking about.

One point that the Wiki glosses over is that the Russians invaded Poland just after the Germans but the Russians were not charged, tried or convicted. In fact the Russian judge took time off during that bit of the proceedings so that the Nazis would not be able to comment on the Perversion of  the course of justice. There was extensive Torture of witnesses. One victim was Rudolf Höß, the first commandant of Auschwitz. His false testimony was used as evidence by the perpetrators of the Holocaust® Industry.

Nuremberg Principles
QUOTE
Principle VI states,
"The crimes hereinafter set out are punishable as crimes under international law:

(a) Crimes Against Peace:

(i) Planning, preparation, initiation or waging of a war of aggression or a war in violation of international treaties, agreements or assurances;

(ii) Participation in a common plan or conspiracy for the accomplishment of any of the acts mentioned under (i).

(b) War Crimes
Violations of the laws or customs of war which include, but are not limited to, murder, ill-treatment or deportation of slave labor or for any other purpose of the civilian population of or in occupied territory; murder or ill-treatment of prisoners of war or persons on the Seas, killing of hostages, plunder of public or private property, wanton destruction of cities, towns, or villages, or devastation not justified by military necessity.

(c) Crimes against humanity:

Murder, extermination, enslavement, deportation and other inhumane acts done against any civilian population, or persecutions on political, racial, or religious grounds, when such acts are done or such persecutions are carried on in execution of or in connection with any crime against peace or any war crime."

Principle VII
Principle VII states, "Complicity in the commission of a crime against peace, a war crime, or a crime against humanity as set forth in Principle VI is a crime under international law."
UNQUOTE
This is good enough to indict Blair, Brown, Bush, Cameron, Hitler, Avigdor Lieberman, Mandelson, Mussolini, Netanyahu, Obama, it goes on.