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Part II Burden and Standard of Proof in International Investment Arbitration, 2 Burden of Proof in Investor-State Arbitration

From: Evidence in International Investment Arbitration

Frédéric Gilles Sourgens, Kabir Duggal, Ian A. Laird

From: Investment Claims (http://oxia.ouplaw.com). (c) Oxford University Press, 2023. All Rights Reserved. date: 01 October 2023

Burden of proof — General principles of international law — Standard of proof

This chapter discusses the concept of the burden of proof in investor-state arbitration. The basic rule regarding the burden of proof in international law is that the party who makes an assertion must prove it. The rule has its origins in the traditions of Roman, common, and civil law countries, and is not new or unique to investment arbitration. In fact, this principle has been widely recognized by several international dispute settlement panels, as well as other international agencies. Not every set of arbitration rules explicitly includes this rule, however, although there is near unanimity by tribunals and commentators in its application.

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