He served as the Director of The Earth Institute at Columbia University, a UN advisor under Kofi Annan and Ban Ki-moon, and has played a major role in shaping international economic policy in Latin America, Africa, and Eastern Europe.
In recent years, Sachs has gained attention for his bold criticisms of U.S. military interventions, his warnings about global economic collapse, and his support for multipolar cooperation, including better relations with China, Russia, and the Global South.