Photographed through the window of a closed aircraft, an aerial view shows Pag-asa Island, part of the disputed Spratly group of islands, in the South China Sea located off the coast of western Philippines on Wednesday July 20, 2011. A group of Filipino lawmakers flew Wednesday to the Philippine-occupied island in the disputed South China Sea to assert their country's claim to the potentially oil-rich region in defiance of China's protest that the visit threatens regional stability. (AP Photo/Rolex Dela Pena, Pool)

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