Privileged to be in Johannesburg to honor one of the most honorable of men #MandelaMemorial http://t.co/Y6ZNetp7lv

Privileged to be in Johannesburg to honor one of the most honorable of men #MandelaMemorial #SouthAfrica http://t.co/oDpx7dnVHs

Another great man, Mandela's old friend and ally, Archbishop Desmond Tutu #MandelaMemorial #SouthAfrica http://t.co/zG8vLD8DNK

Mandela was a hero for so many… #MandelaMemorial #SouthAfrica http://t.co/LBRNoS3duD

Obama pays tribute to "a giant of history", Mandela #MandelaMemorial #SouthAfrica http://t.co/Cczs3u8bjU

Friends of Madiba travel from around the world to say goodbye #MandelaMemorial #SouthAfrica http://t.co/U666DKeTaM

… and families #MandelaMemorial #SouthAfrica http://t.co/BwYC9Br6er

Launched my Instagram account! Click here and check it out http://t.co/VuPugqIFtY

Back to the office... With some difficulty! #Amman #Jordan http://t.co/TgcuqXa1lN

!أخيرا رجع ليقضي إجازة الجامعة معنا
#الأردن #عمان
He's home for the holidays.. Finally! #Amman #Jordan http://t.co/GZJCIKRH5Q