A Ukrainian drone attack shut down a data center run by Russian technology giant Yandex, the company said Sunday, the third strike on its facilities in four days as Kyiv widens its campaign against infrastructure deep inside Russia. The attack on the data center in the city of Vladimir, east of Moscow, caused outages across Yandex’s services, leaving users in dozens of Russian cities and in Kazakhstan, Belarus and Armenia unable to order taxis or access banking services, according to Russian...