通过释放Hadjiev并收回将其引渡回土库曼斯坦的威胁，保加利亚可以明确地显示其对履行自身义务的承诺。
By releasing Annadurdy Hadjiev from jail and withdrawing the threat of extradition to Turkmenistan, Bulgaria would unequivocally demonstrate its commitment to fulfilling its obligations.