Contraignant: That which restricts or imposes on someone, often forcing them to take undesired actions.
As seen in: « Pour la troisième fois, ce jeudi, la Russie et la Chine, au Conseil de sécurité des Nations-Unies, ont opposé leur veto aux sanctions contraignantes contre le régime de Bachar al-Assad souhaitées par l’Occident. »
(Translation: “This Thursday, for the third time in the United Nations Security Council, Russia and China have vetoed the restrictive sanctions against the Bachar al-Assad regime sought by the western world.”)