German Chancellor Merkel to address Congress

Today, German Chancellor Angela Merkel will address a joint session of Congress and meet with President Obama. It's her first U.S. visit since her re-election for a second term as German leader. The speech ties in with upcoming festivities in Germany to mark the 20th anniversary of the fall of the Berlin Wall.

Player utilities

This story is based on a radio interview. Listen to the full interview.

But it will also focus on Germany's contribution to the Afghan conflict ? a highly controversial war back in Germany. To bring us the latest poll numbers and the feeling on the ground in Germany, we speak with Irwin "Bud" Collier, professor at the Free University in Berlin.