The recent enlargement to 25 Member States, with Bulgaria and Romania also set to join the Union in 2007, has dramatically increased disparity levels across the EU. The recently published Third Interim Report on Cohesion confirmed that the enlargement of the Union to 25 Member States, later to 27 or more, presents an unprecedented challenge for the competitiveness and internal cohesion of the Union. At the same time, the report noted that some of the poorest parts of the new Member States have some of the highest growth rates in the Union (see map in annex).