Who's the 'tourist' with the camera?

This picture of Ronald Reagan meeting a boy in Russia in 1988 has been floating around the internet all week. Who's the guy with the camera standing behind the boy? I've seen several reports that it's a KGB agent named Vladimir Putin.

The most interesting part of the trip, though, was unscheduled and
was initially unremarkable.

Gorbachev was introducing the president to
tourists. When