Governments — Change of government — Effects — Change of government affected by unlawful and questionable means — Whether new government bound by contractual obligations of prior government — Sudan — Whether military government established by coup d'état bound by obligations of prior civilian government

State succession — In general — Distinction between change of State and change of government — Change of government by unconstitutional means — Rights and obligations of successor — Contractual obligations — Whether successor bound by contractual obligations of prior sovereign — Sudan — Whether military government established by coup d'état constituting successor State — The law of the United States