Registration opens in a few minutes, at 9, for the World Leaders Forum. Register here, and see the full schedule of events below.

Update: Nigeria has dropped out and Spain is now “unconfirmed.”

Jigmi Y. Thinley, Prime Minister of Bhutan

Wednesday, September 15, 2:00 p.m.

Goodluck Ebele Jonathan, President of Nigeria

Monday, September 20, 3:30 p.m.

In partnership with the School of International and Public Affairs

“Challenges of the Drylands”

A discussion with leaders from Eastern Africa.

Monday, September 20, 5:00 p.m.

In partnership with the Earth Institute

José Manuel Barroso, President of the European Commission

Tuesday, September 21, 10:00 a.m.

In partnership with the Alliance Program and School of International and Public Affairs

Meles Zenawi, Prime Minister of Ethiopia

Wednesday, September 22, 4:00 p.m.

In partnership with the Committee on Global Thought

José Manuel Ramos-Horta, President of Timor-Leste

Thursday, September 23, 4:00 p.m.

In partnership with The Earth Institute, Advanced Consortium on Cooperation, Conflict and Complexity (AC4), and the Vale Columbia Center

José Sócrates, Prime Minister of Portugal

Thursday, September 23, 5:00 p.m.

In partnership with the School of International and Public Affairs

Ivo Josipović, President of Croatia

Friday, September 24, 11:00 a.m.

In partnership with the Harriman Institute

Abdullah Gül, President of Turkey

Wednesday, September 24, 3:30 p.m.

In partnership with the School of International and Public Affairs