
The UN Chief could not leave the UN headquarter to meet Asean leaders in a meeting on the sideline of the Asean summit to be held between October 23 and 25.
He has to attend the United Nations Day on October 24, said the ministry's Director of Asean Affairs Vitavas Srivihok.
The Asean-UN summit was postponed from April in Pattaya after red-shirted protesters disrupted the Asean Summit.
Secretary Ban proposed the summit with Asean to be held in September in New York when Asean leaders attended UN General Assembly but all leaders would not gather in the same time during that time, Vitavas said.