After the driver stepped out to take a photo of the passengers, the horse bolted, and a tourist from India fell from the driverless carriage. “We were yelling, ‘Help me, help me!’” said his father. By ...

The attack, which shut down the capital’s airports for several hours, was part of an escalating campaign to bring the conflict home to Russians. By Paul Sonne and Nataliya Vasilyeva Europe and the ...