Before revision: Threat of force in public international law is a situation between states described by British lawyer Ian Brownlie as: an express or implied promise by a government of a resort to force conditional on non-acceptance of certain demands of that government.International Law and the Use of Force by States, Ian Brownlie, CBE, QC, FBA, March 26, 1963, Oxford University PressSubmission by Aidan O’Neill QC, Aidan O'Neill QC The 1969 Vienna convention on the Law of Treaties notes in its preamble that both the threat and the use of force are prohibited.
After revision: Threat of force in public international law is a situation between states described by British lawyer Ian Brownlie as: an express or implied promise by a government of a resort to force conditional on non-acceptance of certain demands of that government.International Law and the Use of Force by States, Ian Brownlie, CBE, QC, FBA, March 26, 1963, Oxford University PressSubmission by Aidan O’Neill QC, Aidan O'Neill QC The 1969 Vienna Convention on the Law of Treaties notes in its preamble that both the threat and the use of force are prohibited.