A former Brookings Institution fellow, Rice served as a foreign policy advisor to Democratic presidential nominees Michael Dukakis, John Kerry, and Barack Obama. After Obama won the 2008 presidential election, Rice was nominated as Ambassador to the United Nations. The Senate confirmed her by unanimous consent on January 22, 2009. During her tenure at the United Nations, Rice championed a human rights and anti-poverty agenda, elevated climate change and LGBT and women's rights as global priorities, and committed the U.S. to agreements such as the Nuclear Non-Proliferation Treaty, Convention on the Rights of Persons with Disabilities, and the U.N. Millennium Development Goals. She also defended Israel at the Security Council, pushed for tough sanctions against Iran and North Korea, and advocated for U.S. and NATO intervention in Libya in 2011.