Limassol may be the focus of attention this week as the American Iwo Jima is in the area for exercise drills, but a different kind of boat is stealing the show. The biggest yacht in the world, the Dilbar, is now anchored right opposite the amphibious assault ship. The luxury superyacht, which belongs to 63-year-old Russian billionaire Alisher Usmanov, has a total interior volume close to 16,000 gross...