MADRID.- The Minister of Culture, Ángeles González Sinde, yesterday presided over the signing of the agreements between the Museo del Prado, the State Hermitage Museum and the State Society for Cultural Action. These agreements pave the way for an unprecedented exchange between the two museums in the form of two major exhibitions that will demonstrate the variety, quality and breadth of the collections of these great institutions. In addition to the Minister of Culture, others present at the signing yesterday included Plácido Arango, President of the Royal Board of Trustees of the Museo del Prado, Charo Otegui, President of the State Society for Cultural Action, Miguel Zugaza, Director of the Museo del Prado, Mikhail Piotrovsky, Director of the State Hermitage Museum, Alexander I. Kuznetsov, Russian Ambassador to Spain, and the Special Ambassador for Russia-Spain Year 2011, Juan José Herrera de la Muela. The