In profile: Barack Obama
Emotions of the US president captured over the years.
U.S. President Barack Obama speaks at an interfaith vigil for the shooting victims from Sandy Hook Elementary School on December 16, 2012 at Newtown High School in Newtown, Connecticut. Twenty-six people were shot dead, including twenty children, after a gunman identified as Adam Lanza opened fire at Sandy Hook Elementary School. Lanza also reportedly had committed suicide at the scene. A 28th person, believed to be Nancy Lanza, found dead in a house in town, was also believed to have been shot by Adam Lanza. (Getty Images) U.S. President Barack Obama (R) dances with first lady Michelle Obama at the Commander-in-Chief Ball on January 21, 2013 in Washington, DC. Obama was sworn-in for his second term as president during a public ceremonial inauguration earlier in the day. (Getty Images) Republican presidential candidate Mitt Romney (L) and U.S. President Barack Obama talk over each other as they answer questions during a town hall style debate at Hofstra University October 16, 2012 in Hempstead, New York. During the second of three presidential debates, the candidates fielded questions from audience members on a wide variety of issues. (Getty Images) U.S. President Barack Obama speaks during a campaign event in the Center form Performing Arts at George Mason University's Fairfax campus October 5, 2012 in Fairfax, Virginia. After a lackluster debate performance against Republican presidential nominee and former Massachusetts Gov. Mitt Romney October 3, Obama's campaign was bouyed by Friday's jobs numbers which showed a drop in the unemployment rate from 8.1 to 7.8 percent. (Getty Images) Former U.S. President Bill Clinton greets Democratic presidential candidate, U.S. President Barack Obama (L) on stage during day two of the Democratic National Convention at Time Warner Cable Arena on September 5, 2012 in Charlotte, North Carolina. The DNC that will run through September 7, will nominate U.S. President Barack Obama as the Democratic presidential candidate. (Getty Images) The wind picks up U.S. President Barack Obama's tie as he walks back to the Oval Office after welcoming the National Football League Super Bowl champions New York Giants to the White House June 8, 2012 in Washington, DC. The Giants defeated The New England Patriots 21-17 to win Super Bowl XXXXVI. (Getty Images) U.S. President Barack Obama speaks in a rare prime-time address to the nation from the East Room of the White House on July 25, 2011 in Washington, DC. Obama urged passage of a resolution to the problem before the nation defaults on payments of the national debt. (Getty Images) U.S. President Barack Obama and Queen Elizabeth II during a State Banquet in Buckingham Palace on May 24, 2011 in London, England. The 44th President of the United States, Barack Obama, and his wife Michelle are in the UK for a two day State Visit at the invitation of HM Queen Elizabeth II. During the trip they will attend a state banquet at Buckingham Palace and the President will address both houses of parliament at Westminster Hall. (Getty Images) In this handout image provided by The White House, President Barack Obama, Vice President Joe Biden, Secretary of State Hillary Clinton and members of the national security team receive an update on the mission against Osama bin Laden in the Situation Room of the White House May 1, 2011 in Washington, DC. Obama later announced that the United States had killed Bin Laden in an operation led by U.S. Special Forces at a compound in Abbottabad, Pakistan. (Getty Images) Democratic Presidential Candidate Senator Barack Obama (D-IL) drives a bumper car with his daughter Sasha at the Iowa State Fair August 16, 2007 in Des Moines, Iowa. The fair runs until August 19th and is expected to draw about 1 million people. John Edwards also made a campaign stop at the fair today. (Getty Images) Candidate for the U.S. Senate Barack Obama (D-IL) sits with his wife Michelle and daughters Sasha (L) and Malia (R) in a hotel room as they wait for election returns to come in November 2, 2004 in Chicago, Illinois. Obama is expected to win easily against the Republican candidate Alan Keyes. (Getty Images)