In his NHL draft year, Daniel competed for Sweden at the 1999 World Junior Championships in Winnipeg, Manitoba. He recorded ten points in six games, and tied for second in tournament scoring with Daniel Tkaczuk of Canada and Scott Gomez of the United States, behind Brian Gionta of the United States. Sweden failed to medal, losing the bronze medal game against Slovakia by a score of 5–4. Later that year, Daniel made his debut for the Swedish men's team at the 1999 World Championships in Norway. He notched one assist over nine games as Sweden won the bronze medal.