What a difference a war makes.
Just a few months ago, Yandex stood out as a rare Russian business success story, having mushroomed from a small start-up into a tech colossus that not only dominated search and ride-hailing across Russia, but boasted a growing global reach.
A Yandex app could hail a taxi in far-flung cities like Abidjan, Ivory Coast; Oslo, Norway; or Tashkent, Uzbekistan; and the company delivered groceries in London, Paris and…