In handball you're, apparently, able to change national teams as long as you get citizenship in the country you want to play for. It's not like football where an official game will tie you to a national team.
The Daily Show also talked about the new stadium in the episode from the 19th. It's just after the first commercial break (around 9th minute): http://www.thedailyshow.com/full-episodes/tue-november-19-2013-bill-cosby