The IBAF, the International Baseball Federation, has threatened to withdraw accreditation for the World Baseball Classic if Cuba is not allowed to participate. If there is no IBAF approval of the competition and the WBC were to still take place, all participating nations would be declared ineligible for future international competitions.
If you're ever in Lausanne, Switzerland, you can drop by the headquarters. Malta is a member. The 2005 Maltese champs were the Melieha Northenders. Man, I hate that team, always buying up all the good Maltese players. When I was a kid, I remember when there were real pennant races in Malta.