Did He Not Show Up Because It Wasn't All About Him? Left-wing German paper Der Spiegel seems to have gotten that impression:
There was one world leader absent for today’s commemorations marking the 20th anniversary of the fall of the Berlin Wall. Surprisingly enough, it’s President Barack Obama, who found time last year to give a campaign speech there last year, which Der Spiegel summed up as “People of the World, Look at Me”.
The White House has cited a packed schedule, though looking at it he had nothing much on yesterday (brief chat to reporters about healthcare – by far his biggest priority) and just blah briefings and a bill signing today until a metting this evening with Benjamin Netanyahu. This time, Der Spiegel has reported it as “Barack Too Busy”.