Jerusalem - Sheldon Adelson has spent the past two decades collecting a string of casinos, but now the billionaire - considered by many to be the richest Jew in the world - is taking another kind of gamble. Two weeks ago, Adelson, CEO of the Las Vegas Sands Corp., launched Yisrael Hayom, or Israel Today, a free daily newspaper that on its first day was already one of the largest-circulation papers in the country.