AMSTERDAM (Reuters) - Two men wanted in connection with the assassination of Serbian Prime Minister Zoran Djindjic have been arrested in Rotterdam, the Dutch public prosecutor's spokesman says. Ninoslav Konstantinovic and his brother, Sladjan Konstantinovic, were arrested on Saturday afternoon, an official said. "The national police investigation branch arrested at the start of the afternoon two suspects of the murder of Serbian Prime Minister Zoran Djindjic," the public prosecutor's office said in a statement. "The brothers arrested on Saturday have probably been staying in the Netherlands for several months...Both suspects have been arrested by a special team in Rotterdam." "The...