Biden continues his landmark tour of the Balkans when he visits Belgrade Wednesday, May 20, hoping to mend ties with Serbia which were badly damaged over Washington's support for Kosovo independence.

Biden is the highest level US official to visit Serbia since Jimmy Carter in 1980. During his visit he is to hold talks with President Boris Tadic, Prime Minister Mirko Cvetkovic and Defense Minister Dragan Sutanovac.

The vice president's visit aims to assert US leadership in the region, which - after having played a massive role in the previous decade - Washington has largely neglected while focusing on the Middle East.