2005 – Elected President of the United Nations Convention to Combat Desertification (UNCCD).

2003 – Elected Rapporteur of the African Union (AU) in Maputo, Mozambique.

2003 – Chaired and spearheaded peace initiatives with the framework of IGAD Peace Processes in Sudan and Somalia.

2003 – Attended the US National Prayer Breakfast in Washington D.C.

2003 – Addressed the UN General Assembly in New York regarding the Peace Process in Sudan.

2001 – As Minister for Tourism and Information, addressed the 14th Session of the World Tourism Organization General Assembly and later the Millennium Conference held in Seoul, South Korea and Osaka, Japan, respectively.

1997 – As Minister for Foreign Affairs and International Cooperation, under the stewardship of the late Mwalimu Julius Nyerere, he dealt with the crisis in Burundi.

1994 – As Minister for Foreign Affairs and International Cooperation, he addressed the 61st Ordinary session of OAU Council of Ministers – Addis Ababa. He also addressed the UN General Assembly, during the 49th Session.

1993 – As Minister for Foreign Affairs and International Cooperation, he addressed the Organization of African Union (OAU) Council of Ministers in Addis Ababa, Ethiopia. It was the 57th Ordinary Session of the OAU Council of Ministers facilitating mechanism of conflict prevention, management and resolution in the Great Lakes Region.

1993 – As Minister for Foreign Affairs and International Cooperation, he addressed the World Conference on Human Rights in Austria. The host country was elected the President and he was elected the Vice President of the forum.

1993 – As Minister for Foreign Affairs and International Cooperation, addressed the UN General Assembly on the 5th October, 1993 in New York. In his address he highlighted the conflict in Somalia, and the role of the United Nations in tackling the conflict. He assured the Assembly that Kenya could spearhead the peace talks in Somalia and would continue to cooperate with UNHCR to facilitate voluntary accommodation and repatriation of refugees and in handling the refugee crisis.

1992 – As Deputy Speaker of the National Assembly he addressed the United States Congressional Sub-Committee on African Affairs in the US (under the chairmanship of Mr. Mervyn Dymally of the US Congress).