NEW YORK An early 17th-century El Greco painting is caught in a fierce legal battle among the Romanian state, a Russian oligarch and a contested royal figure, with all parties claiming rightful ownership. The artwork, “ Saint Sebastian ,” is currently held at Christie’s auction house in New York. Russian billionaire Dmitry Rybolovlev, who purchased the piece in 2010 through his company Accent Delight, had planned to sell it earlier this year. However, the sale was canceled after the Romanian