Brussels, 18/10/2007 (Agence Europe) - The informal European Council opened in Lisbon on the evening of Thursday 18 October against a background of statements indicating that there would be difficult negotiations ahead on the final problems still blocking the way to the adoption of the new ET Treaty. On Thursday, Poland threatened to block discussions if it is not successful in its call for the 1994 political statement on the “Ionnina clause” to become EU primary law, either by...