Diabate was a member of the Ivory Coast national basketball team at the 2007 and 2009 FIBA Africa Championship. In 2009, he helped the team to a surprise silver medal to qualify for the country's first FIBA World Championship in 24 years. On June 19, 2015, Diabate was one of 27 players to be named to the Ivory Coast's preliminary squad for the 2015 Africa Championship by head coach Hugues Occansey.