Principles of Evidence in Public International Law as Applied by Investor-State Tribunals: Burden and Standards of Proof 1 (1)I Introduction1 Burden of Proof and Standard of Proof2 History of PCIJ/ICJ as Related to EvidenceII Burden of Proof1 Principle #;: A Party That Raises a Particular Issue Has the Burden of Proof2 Principle #2: Burden of Proof Will Not Be Relaxed3 Principle #3: At the Jurisdictional Phase, the Burden of Proof Follows the "pro tern" Principle4 Principle #4: Failure to Meet the Burden of Proof Can Lead to Dismissal of That Claim and if the Claim Is Particularly Significant, It Can Be Fatal to the CaseIII Standard of Proof1 Principle #1: Unlike Burden of Proof Standard of Proof Is a Relative Concept2 Principle #2: The Balance of Probabilities Standard or Preponderance of Evidence Standard3 Principle #3: The Heightened Standard of ProofIV ConclusionAcknowledgmentsBibliography