President Salva Kiir Mayardit advises the Sudan Sovereign Council, opposition groups not to return to conflict after the signing of Sudan pre-negotiate principles.
He says the conflict must stop completely because the two countries are destroyed enough.
He vows to help the Sudan to move forward and neglect fighting.
Sudan Sovereign Council Deputy Chair, General Mohammad Hamdan Dagalo (Hemedti) describes the signing of the principles as a progress to stop the war.
Sudan Revolutionary Front leader Dr Al Hadi Idriss Yahiya urges the international community and South Sudan to nurture Sudanese peace to grow healthy.
The SPLM-N leader Abdel Aziz Adam Al Hilu promises to work hard to achieve the goals for peace and stability of the country.
The leaders spoke on Wednesday after signing pre-negotiate principles.