Sudan's president, who faces war crimes charges, scheduled to address UN summit in September

Sudan's President Omar al-Bashir, who faces international war crimes and genocide charges, is on the provisional list of speakers at a U.N. summit in late September where world leaders will adopt new goals aimed at ending poverty and combating climate change by 2030.

He would be the first head of state to address the General Assembly while facing charges by the International Criminal Court.

U.N. spokesman Farhan Haq told reporters Tuesday that Secretary-General Ban Ki-moon has said all U.N. member states have to take the ICC warrant "seriously."

Sudan cancelled al-Bashir's scheduled speech to the General Assembly's annual ministerial meeting in September 2013 at the last minute. The United States had made it clear it did not want al-Bashir to show up in New York.