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65 Va. J. Int'l L. Online 1 (2024)

handle is hein.journals/vajoillw65 and id is 1 raw text is: 








Delimiting Agreements for International Law

                              DUNCAN B. HOLLIS*

    Agreements   are central to many  international law projects, including both treaty-
making  and  the (rising) use of non-binding agreements. Yet, for all the attention states
and  scholars  currently direct to  difentiating   between  binding  and  non-binding
agreements, there has been  relatively !ittle discussion of the antecedent inquiry-what
constitutes an agreement in the firstplace? This short Essay callsfor new efforts to define
agreements forpurposes  of international law and international relations, focusing on two
criteria-mutuality  and commitment.  Agreements  require two (or more)particdpants just
as  they must  exhibit some  shared  expectations regarding those particdpants' future
behavior. This  definition provides important /imiting princdples by excluding certain
binding instruments (e.g., unilateral declarations) as well as some non-binding ones (e.g.,
diplomatic  deliverables that do not ref/ect shared commitments to future courses of
conduct). Moreover, a focus on agreements foregrounds a salient category absent in most
existing discourse-tacit  agreements. Reflecting on  why  tacit agreements  quakjfy as
agreements can help high/ight diferent methods (e.g., content-driven criteria, presumptions
and  defaults) to supplement (or substitute for) existing subjective and objective efforts to
identify whether an agreement is binding under international law. For those concerned with
the transpareny of diplomatic deliverables, the eficacy of domestic approvalprocedures for
international agreements, as well as the operation of both the law of treaties and the law
of state responsibility, it will be necessary to develop a broader and deeper understanding
of what agreements  are alongside any efforts to identify and differentiate among their
binding and non-binding forms.















     * Laura H. Carnell Professor of Law, Temple University Beasley School of Law; Non-Resident
Scholar, Carnegie Endowment for International Peace. Professor Hollis is editor of THE OXFORD
GUIDE  TO TREATIES (2nd ed. 2020) and from 2016-2020 served as the Rapporteur on Binding and
Non-Binding  Agreements for the Organization of American  States' Inter-American Juridical
Committee.

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