Acquiescence

Acquiescence, consent, either express or implied. A persons tacit or passive acceptance; implied consent to an act (Black's Law Dictionary). Passivity and inaction on foreign claims that according to customary international law usually call for protest to assent to pressure, or safeguard rights. The result is that binding legal effect is given to silence and inaction. Acquiescence, as a principle of substantive law, is grounded in the concepts of good faith and equity.