The CEO of the U.S. anti-doping agency called the decision a "weak, watered-down outcome." Russian teams are banned, but its athletes may compete — albeit without the country's flag and anthem.
Alberto Salazar is the head coach for long-distance running at the Nike Oregon Project, an elite program where he has worked with track stars such as Mo Farah.
The decision, described by one advocate as "the greatest treachery against clean athletes in Olympic history," is subject to conditions. It has been roundly condemned by anti-doping advocates.
Aleksandr Krushelnitckii finished third in the mixed-doubles curling tournament, competing with his wife and teammate, Anastasia Bryzgalova. Now he's the subject of an investigation.
More than 30 athletes who were to compete at the Siberian Indoor Championships last weekend suddenly pulled out of the event claiming various illnesses.
The World Anti-Doping Agency says Russia's official sports drug-testing lab doesn't meet guidelines, placing in doubt the country's participation in the Winter Olympics.
There was a "systematic and centralised cover up and manipulation of the doping control process" in Russia, an investigation found. The report includes thousands of documents as evidence.
The IOC is also promising more money for WADA, saying that a financial boost would come from "the Olympic Movement" as well as from governments.
The news follows revelations last week that retested samples from 31 athletes in the 2008 Beijing Games had suspicious results.
After the retesting of samples from the 2008 Beijing Olympics, dozens of athletes from six sports could be banned from the 2016 Games in Rio, the International Olympic Committee said.