Sasha Kazilo moved from Russia to Paris along with her family and her business, a startup called Funexpected. Hundreds of thousands of professional workers, many of them young, have left Russia since its invasion of Ukraine , accelerating an exodus of business talent and further threatening an economy targeted by Western sanctions . Those leaving the country include tech workers, scientists, bankers and doctors, according to surveys, economists and interviews with emigrants. They are departing for countries including Georgia, Armenia and Turkey. More are expected to follow.