Journalists, dissidents, human rights workers all tell stories of being followed and harassed by Russia's security services. They range from the comical to the frightening.
Russian intelligence services are the main suspects behind the hacking of DNC emails, and many Democrats warn that the Russian president has stepped into American politics in an unprecedented way.
A 65-year-old Russian adventurer has piloted a balloon around the world solo and non-stop in 11 days, braving air too thin to breath, below-freezing temperatures, storms and barely any sleep.
At the 2014 Winter Games in Sochi, the Russians traded dirty urine samples for clean ones by passing them through a hole drilled into the wall of the anti-doping lab, according to an official report.
"The findings of the report show a shocking and unprecedented attack on the integrity of sport and on the Olympic Games," IOC President Thomas Bach says of a WADA investigation.
The Americans and Russians are both waging air campaigns against the Islamic State. But the two powers are deeply suspicious of one another and have different goals for Syria's future.
The Russian scandal is a hot topic at the U.S. track and field Olympic Trials. Some feel individual Russian athletes should be allowed to compete if they're clean, others support a blanket ban.
Vyacheslav Trubnikov was a Soviet and Russian spy for more than three decades. He found some of his American adversaries worthy rivals. Others, not so much.