President Obama addresses United Nations

US President Barack Obama as he speaks during the Summit on Climate Change at the United Nations in New York on September 22, 2009. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

NEW YORK - SEPTEMBER 23: U.S. President Barack Obama (R) shakes hands with Prime Minister Yukio Hatoyama of Japan during a bilateral meeting at the Waldorf Astoria September 23, 2009 in New York City. Obama is in New York to attend the 64th United Nations General Assembly. (Photo by Olivier Doulier-Pool/Getty Images)

NEW YORK - SEPTEMBER 23: United States President Barack Obama (R) looks on after delivering his first address to the United Nations General Assembly at U.N. headquarters September 23, 2009 in New York City. This is the 64th session of the United Nations General Assembly featuring leaders from over 120 countries. Iranian President Mahmoud Ahmadinejad is scheduled to speak later in the day. (Photo by Mario Tama/Getty Images)

NEW YORK - SEPTEMBER 23: United States first lady Michelle Obama sits next to Yoo Soon-Taek (R), the wife of United Nations Secretary-General Ban Ki-moon at the 64th General Assembly at United Nations Headquarters on September 23, 2009 in New York City. Over 120 heads of state will converge in New York for the 64th session of the United Nations' General Assembly over the next seven days. (Photo by Jeff Zelevansky/Getty Images)

NEW YORK - SEPTEMBER 23: United States President Barack Obama is greeted by First Lady Michelle Obama (L) after delivering his first address to the United Nations General Assembly at U.N. headquarters September 23, 2009 in New York City. This is the 64th session of the United Nations General Assembly featuring leaders from over 120 countries. Iranian President Mahmoud Ahmadinejad is scheduled to speak later in the day. (Photo by Mario Tama/Getty Images)

NEW YORK - SEPTEMBER 23: United States President Barack Obama is greeted by First Lady Michelle Obama after delivering his first address to the United Nations General Assembly at U.N. headquarters September 23, 2009 in New York City. This is the 64th session of the United Nations General Assembly featuring leaders from over 120 countries. Iranian President Mahmoud Ahmadinejad is scheduled to speak later in the day. (Photo by Mario Tama/Getty Images)

US President Barack Obama speaks during the first day of the UN General Assembly at the United Nations headquarters in New York on September 23, 2009. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

US President Barack Obama smiles as he waits to speak during the 64th session of the United Nations General Debate September 23, 2009 at the United Nations in New York. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

US First Lady Michelle Obama (L) listens with UN Secretary General Ban Ki-moon's wife Soon-Taek during the 64th General Assembly at the United Nations in New York September 23, 2009.AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

President Moamer Kadhafi of Libya applauds after US President Barack Obama's address the United Nations General Assembly at UN Headquarters in New York, NY, September 23, 2009. AFP PHOTO/Jim WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)

US President Barack Obama(L) shakes hands with the United Nations Secretary General Ban Ki-moon after speaking during the 64th session of the United Nations General Debate September 23, 2009 at the United Nations in New York. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

US President Barack Obama speaks during the 64th session of the United Nations General Debate September 23, 2009 at the United Nations in New York. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

US President Barack Obama waits to speak during the United Nations General Assembly September 23, 2009 at UN headquarters in New York. President Obama Wednesday urged world leaders to move in a new direction saying they "must embrace a new era of engagement" in his first speech to the annual UN General Assembly. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

President of Iran Mahmoud Ahmadinejad listens to the speech of US President Barack Obama during the 64th session of the United Nations General Debate September 23, 2009 at the United Nations in New York. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

President Barack Obama speaks during the United Nations General Assembly at UN headquarters in Manhattan on Wednesday. (Sept. 23, 2009)

NEW YORK - SEPTEMBER 23: U.S. First Lady Michelle Obama waves as she enters the U.N. headquarters for the United Nations General Assembly on September 23, 2009 in New York City. This is the 64th session of the United Nations General Assembly featuring leaders from over 120 countries. (Photo by Rick Gershon/Getty Images)

First lady Michelle Obama waves as she enters UN headquarters for the United Nations General Assembly Wednesday in Manhattan. (Sept. 23, 2009)

US President Barack Obama shakes hands with United Nations Secretary General Ban Ki-moon after speaking during the United Nations Climate Change Summit September 22, 2009 at the United Nations in New York. AFP PHOTO/DON EMMERT (Photo credit should read DON EMMERT/AFP/Getty Images)

U.S. President Barack Obama, below, shakes hands with U.N. Scretary General Ban Ki-moon after he addressed the summit on climate change at the United Nations, Tuesday, Sept. 22, 2009. (AP Photo/Richard Drew)

US President Barack Obama as he speaks during the Summit on Climate Change at the United Nations in New York on September 22, 2009. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

US President Barack Obama addresses a speech during a the Summit on Climate Change at the United Nations in New York on September 22, 2009. AFP PHOTO/Emmanuel Dunand (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)

Policemen guard the hotel block where most of the world leaders will stay during the UN General Assembly in New York on September 21, 2009. As the world leaders converge on New York for the annual United Nations General Assembly, US President Barack Obama geared up for whirlwind meetings with counterparts from China, Japan and Russia, but Iran's firebrand leader looked set to be left out in the cold. AFP PHOTO/Jewel SAMAD (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

U.S. President Barack Obama addresses the 64th session of the United Nations General Assembly, Wednesday, Sept. 23, 2009. (AP Photo/Richard Drew)

NEW YORK - SEPTEMBER 23: First lady Michelle Obama listens to U.S. President Barack Obama address the 64th General Assembly at United Nations Headquarters on September 23, 2009 in New York City. Over 120 heads of state will converge in New York for the 64th session of the United Nations' General Assembly over the next seven days. (Photo by Jeff Zelevansky/Getty Images)

Actress Demi Moore and actor Ashton Kutcher listen as President Barack Obama speaks at the Clinton Global Initiative Annual meeting in New York on the sidelines of the United Nations General Assembly, Tuesday, Sept. 22, 2009. (AP Photo/Charles Dharapak)

President Barack Obama addresses the United Nations climate change summit, Tuesday, Sept. 22, 2009, at the United Nations headquarters. (AP Photo/Charles Dharapak)

NEW YORK - SEPTEMBER 23: U.S. President Barack Obama smiles as he enters the U.N. headquarters for the United Nations General Assembly on September 23, 2009 in New York City. This is the 64th session of the United Nations General Assembly featuring leaders from over 120 countries. (Photo by Rick Gershon/Getty Images)

NEW YORK - SEPTEMBER 22: (AFP OUT) U.S. President Barack Obama (L) listens to President Hu Jintao of China speak at a bilateral meeting at the Waldorf Astoria Hotel on September 22, 2009 in New York City. The two leaders were meeting on the sidelines of the UN climate change summit and the 64th session of the United Nations General Assembly. (Photo by John Angelillo-Pool/Getty Images)

In this photo released by the United Nations, U.S. President Barack Obama, left, shakes hands with United Nations Secretary-General Ban Ki-Moon at United Nations Headquarters in New York, Tuesday, Sept. 22, 2009. (AP Photo/The United Nations, Mark Garten) **MANDATORY CREDIT; NO SALES**

President Barack Obama meets with Israeli Prime Minister Benjamin Netanyahu, left, and Palestinian President Mahmoud Abbas, in New York, Tuesday, Sept. 22, 2009, on the sidelines of the United Nations General Assembly. (AP Photo/Charles Dharapak)

President Barack Obama sits with Israeli Prime Minister Benjamin Netanyahu, left, and Palestinian President Mahmoud Abbas, right, as they begin their trilateral meeting on the sidelines of the United Nations General Assembly in New York, Tuesday, Sept. 22, 2009. Man second right is an unidentified translator. (AP Photo/Charles Dharapak)

President Barack Obama sits down with Israeli Prime Minister Benjamin Netanyahu, left, and Palestinian President Mahmoud Abbas, to begin their trilateral meeting on the sidelines of the United Nations General Assembly in New York, Tuesday, Sept. 22, 2009. (AP Photo/Charles Dharapak)