22 March 2007 BBC Europe editor Mark Mardell on the contents of the Berlin Declaration to be signed at a summit this weekend, comparisons between the EU and the Roman empire, and two very different visions of the EU's future. The diary is published every Thursday - bookmarking this page will always take you to the latest issue. OUTSTANDING BLANDNESS"In the middle of the very grand room, one of the many grand rooms in the palace, stands a glass case, containing a book of 1,144 pages. In it are both dreams and nightmares, depending who is reading the book."...