Barack Hussein Obama was on Tuesday sworn in as America's 44th President, bringing a message of hope to a nation hungry for change after eight years of George W Bush regime.
The 47-year-old first African-American to enter to the White House, Obama was sworn in by the US Supreme Court Chief Justice John Roberts at noon at the Capitol Hill.
Image: Obama is administered the oath of office as the 44th US President by Chief Justice John Roberts with his wife Michelle and daughters Malia and Sasha by his side.
Photograph: Jim Young/Reuters
Also see: An all-star celebration for Barack Obama