Barack Obama's presidency: behind the scenes – in pictures

January 2009: Barack Obama practises for the swearing-in ceremony at the US Capitol in Washington Photograph: Pete Souza/The White House

January 2009: Barack Obama and Michelle Obama ride in a golf cart at the inaugural ball in Washington Photograph: Pete Souza/The White House

February 2009: Barack Obama and Michelle Obama wear 3D glasses while watching the Super Bowl during a party in the family theatre of the White House Photograph: Pete Souza/The White House

February 2009: Barack Obama and Michelle Obama dance while the band Earth, Wind and Fire performs at the Governors' Ball Photograph: Pete Souza/The White House

February 2009: Barack Obama takes aim with a photographer's camera backstage at Dobson high school in Arizona Photograph: Pete Souza/The White House

March 2009: Barack Obama welcomes the family's new puppy Bo to the White House Photograph: Pete Souza/The White House

March 2009: Barack Obama practises his golf swing before an event in Los Angeles Photograph: Pete Souza/The White House

April 2009: National security adviser General James Jones and USSS special agent in charge Joe Clancy co-ordinate arrival details by telephone for President Barack Obama's visit to Baghdad Photograph: Pete Souza/The White House

May 2009: Barack Obama bends over to Jacob Philadelphia, the son of a White House staff member, as he pats his head during a visit to the Oval Office Photograph: Pete Souza/The White House

May 2009: Barack Obama moves his meeting with his senior advisers outside to the Rose Garden Photograph: Pete Souza/The White House

May 2009: President Barack Obama's personal secretary, Katie Johnson, tries on a Pittsburgh Steelers football helmet outside the Oval Office Photograph: Pete Souza/The White House

August 2009: Sasha Obama hides behind the sofa as she sneaks up on Barack Obama at the end of the day in the Oval Office Photograph: Pete Souza/The White House

October 2009: President Barack Obama, along with cabinet secretaries and members of Congress, during a basketball game on the White House court Photograph: Pete Souza/The White House

October 2009: Barack Obama meets with former president George Bush Sr and defence secretary Robert Gates at Texas A&M University Photograph: Pete Souza/The White House

December 2009: Barack Obama fist-bumps janitor Lawrence Lipscomb in the Eisenhower executive office building
Photograph: Pete Souza/The White House

February 2010: Barack Obama signs a blank wall during a tour of the International Brotherhood of Electricians Photograph: Pete Souza/The White House

February 2010: Snow blankets Washington as Barack Obama and his daughters play in the Rose Garden in the midst of the storm Photograph: Pete Souza/The White House

March 2010: Barack Obama calls a member of Congress to discuss healthcare reform in the Oval Office Photograph: Pete Souza/The White House

April 2010: Barack Obama meets privately with clergy members in the Blue Room in the White House as a final prayer was delivered holding one another's shoulders Photograph: Pete Souza/The White House

May 2010: President Obama talks with his daughter Malia on the swing set outside the Oval Office Photograph: Pete Souza/The White House

June 2010: Barack Obama listens during a briefing in Venice, Louisiana, about the situation along the Gulf Coast following the BP oil spill
Photograph: Pete Souza/The White House

August 2010: White House trip director Marvin Nicholson stops to weigh himself as the president steps on the back of the scale Photograph: Pete Souza/The White House

May 2011: Barack Obama, Joe Biden, Robert Gates and Hillary Clinton along with members of the national security team, as they receive an update on the mission against Osama bin Laden in the Situation Room of the White House Photograph: Pete Souza/The White House

September 2011: Barack Obama whispers to Michelle Obama at the Waldorf Astoria hotel between events in New York Photograph: Pete Souza/The White House

October 2011: Jay Leno tells Barack Obama the punch-line to a story backstage as the president waits to tape the Tonight Show in Burbank, California Photograph: Pete Souza/The White House

October 2011: The Obama family make an unofficial visit the Martin Luther King Jr National Memorial in Washington Photograph: Pete Souza/The White House

December 2011: The president and Bo ride in the presidential motorcade en route to PetSmart in Virginia Photograph: Pete Souza/The White House

Febuary 2012: Corbin Fleming plays with the president's telephone during his family's visit to the Oval Office Photograph: Pete Souza/The White House

March 2012: Michelle Obama jokes with David and Samantha Cameron during a state dinner reception Photograph: Pete Souza/The White House

May 2012: President Barack Obama participates in a G8 summit working session in the dining room of Laurel Cabin at Camp David Photograph: Pete Souza/The White House

May 2012: David Cameron, Barack Obama, Angela Merkel and others watching the overtime of the Champions League final during the G8 summit at Camp David Photograph: Pete Souza/The White House

June 2012: Barack Obama has lunch with the vice-president, Joe Biden, on the Oval Office patio Photograph: Pete Souza/The White House

July 2012: Barack Obama holds a cabinet meeting Photograph: Pete Souza/The White House