
U.S. President Barack Obama attends the Nuclear Security Summit in the Hague, Netherlands, in March 2014. As Obama's second term nears its close, here's a look at some key moments of his administration.

First lady Michelle Obama brushes specks from the coat of then-Sen. Obama in Springfield, Illinois, just before he announced his candidacy for President in February 2007. Their daughters Malia, left, and Sasha wait in the foreground.

Obama appears on "Meet the Press" with Tim Russert, right, in Des Moines, Iowa, in November 2007.

Obama shakes hands with supporters after addressing a rally in Concord, New Hampshire, in January 2008.

Obama gives a speech at the National Constitution Center in Philadelphia in March 2008.

Obama speaks at the 2008 Democratic National Convention in Denver.

Obama stands on stage in Chicago with his family after winning the presidential election on November 4, 2008.

Obama poses in the Oval Office with several former U.S. Presidents in January 2009. From left are George H. W. Bush, Obama, George W. Bush, Bill Clinton and Jimmy Carter.

Obama is sworn in by Chief Justice John Roberts as the 44th President of the United States on January 20, 2009.

As retired military officers stand behind him, Obama signs an executive order to close down the detention center at Guantanamo Bay, Cuba, in January 2009.

Obama and Vice President Joe Biden look at solar panels as they tour the solar array at the Denver Museum of Nature and Science on February 17, 2009. That same day, Obama signed the American Recovery and Reinvestment Act.

A soldier hugs Obama during his surprise visit to Camp Victory just outside Baghdad, Iraq, in April 2009.

Obama bends over so the son of a White House staff member can pat his head during a visit to the Oval Office in May 2009. The boy wanted to know if Obama's hair felt like his.

Obama kisses Sonia Sotomayor's cheek after announcing her as his nominee for Supreme Court justice in May 2009.