Streit played in 10 straight World Chanpionships (11 overall) starting in 1998. He played for Switzerland in the 1998 qualifying round for the Olympics and again in the 2002 Olympics.
Streit tied for second in points among defensemen (behind only Lubomir Vishnevsky) at the 2005 World Championships, which was basically a best-on-best tournament because of the lockout.
Streit was named captain of the Swiss National Team prior to the Turin Olympics and served as their captain and #1 defenseman in both 2006 and 2010. In 2006, he scored a goal in each of Switzerland's upset victories over the Czech Republic and Canada:
http://www.nytimes.com/2006/02/19/sports/olympics/19hockey.html And there's his NHL career