Former President Bill Clinton leads a panel discussion on climate change at the Clinton Global Initiative, Sept. 20, 2011 in New York, as Cissé Mariam Kaïdama Sidibé, Prime Minister of Mali, listens on. (Mark Lennihan/AP Photo)

Ukrainian veterans of the Soviet war in Afghanistan and Chernobyl catastrophe cleanup workers clash with riot police as they storm the Ukrainian parliament in Kiev, Sept. 20, 2011, during a protest against the adoption of a bill abolishing their social benefits. (Sergei Supinsky/AFP/Getty Images)

Eddie Reyes is takes a moment to remember 15 of his colleagues from the New York Police Department’s Emergency Service Unit who were killed on Sept. 11, 2001, during a first responders wreath-laying ceremony at the National September 11 Memorial, Sept. 20, 2011 in New York. (Spencer Platt/Getty Images)

Bolivia’s President Evo Morales looks on as he listens to journalists before departing at the Jose Marti airport in Havana, Cuba, Sept. 19, 2011. Morales, who was on an official visit to Cuba, received an honorary doctorate from the University of Havana. (Javier Galeano/AP Photo)

A U.S. Army soldier from Bravo Company 2nd Battalion, 27th Infantry, smokes a cigarette prior to taking part in a mission with the Afghan army, at Outpost Monti in Kunar province, Sept. 20, 2011. (Tauseef Mustafa/AFP/Getty Images)

Brooms are set on the sand during a protest against corruption at Copacabana beach in Rio de Janeiro, Brazil, Sept. 19, 2011. The protest was organized by Rio de Paz, a Brazilian NGO, whose members placed 594 brooms representing the number of Brazilian lawmakers. (Fabio Motta/Agencia Estado via AP Images)