Las Vegas Sands Corp.’s billionaire Chairman Sheldon Adelson opened the world’s biggest casino in Macau and unveiled ambitions to expand in India and Japan as Asian gambling booms. The new 3,000 room Venetian Macao resort aims to tap China’s 1.3 billion people, and Adelson said he’s also keen on opening in the world’s second-most populous nation. "We are very much interested in, one, attracting Indians to come to Macau, and two, establishing in India, when the government makes the necessary changes,”...