US President Barack Obama has spoken in Berlin almost exactly 50 years after his predecessor John F. Kennedy's historic address to the then-divided city. The speech included a pledge to move toward nuclear disarmament.  

Berlin and Washington are bound by a deep friendship. It developed in the Cold War and has now survived more recent turmoil in transatlantic relations. 

In summer, charcoal fumes and the spit and crackle of grilled meat are as much a part of Berlin as the Berghain club or the Brandenburg Gate. DW's Jefferson Chase investigates Berlin's smoldering BBQ culture.