The Strasbourg seat is seen as a symbol of reconciliation between France and Germany, the Strasbourg region having been fought over by the two countries in the past. However, the cost and inconvenience of having two seats is questioned. While Strasbourg is the official seat, and sits alongside the Council of Europe, Brussels is home to nearly all other major EU institutions, with the majority of Parliament's work being carried out there. Critics have described the two-seat arrangement as a "travelling circus", and there is a strong movement to establish Brussels as the sole seat. This is because the other political institutions (the Commission, Council and European Council) are located there, and hence Brussels is treated as the 'capital' of the EU. This movement has received strong backing from numerous figures, including Margot Wallström, Commission First-Vice President from 2004 to 2010, who stated that "something that was once a very positive symbol of the EU reuniting France and Germany has now become a negative symbol of wasting money, bureaucracy and the insanity of the Brussels institutions". The Green Party has also noted the environmental cost in a study led by Jean Lambert MEP and Caroline Lucas MEP; in addition to the extra 200 million euro spent on the extra seat, there are over 20,268 tonnes of additional carbon dioxide, undermining any environmental stance of the institution and the Union. The campaign is further backed by a million-strong online petition started by Cecilia Malmström MEP. In August 2014, an assessment by the European Court of Auditors calculated that relocating the Strasbourg seat of the European Parliament to Brussels would save €113.8 million per year. In 2006, there were allegations of irregularities in the charges made by the city of Strasbourg on buildings the Parliament rented, thus further harming the case for the Strasbourg seat.