Obama pays tribute to Nelson Mandela

President Obama and first lady Michelle Obama marked the first anniversary of Nelson Mandela's death with a tribute to the South African and global leader.

"One year ago, the world lost a leader whose struggle and sacrifices inspired us to stand up for our fundamental principles, whose example reminded us of the enduring need for compassion, understanding, and reconciliation, and whose vision saw the promise of a better world," the Obamas said in a written statement.

The president and first lady called on people "to reflect on how Mandela's life has inspired our own, and will impact the paths of generations to come — including the next generation of world leaders."

They added: "While Mandela left behind a world more just and free, there is much more work to be done. On this day, and on every day, we honor his spirit and his memory."