Reporting from Moscow — Over a bottle of vodka and a traditional Russian salad of pickles, sausage and potatoes tossed in mayonnaise, a group of friends raised their glasses and wished Igor Irtenyev and his family a happy journey to Israel. Irtenyev, his wife and daughter insist they will just be away for six months, but the sadness in their eyes on this recent night said otherwise. . . . Experts believe that 100,000 to 150,000 people now leave the country annually and warn that the exodus reached dangerous dimensions in the last three years. "People are going abroad for...