Russia frees imprisoned French researcher Laurent Vinatier

Russia will free Laurent Vinatier, a French researcher serving ​a ‍three-year ​prison sentence for flouting laws requiring "foreign agents" to register with authorities. Vinatier will be exchanged for detained basketball player Daniil Kasatkin, accused by the US of hacking. Russian media reported that Vinatier had ​been pardoned by President Vladimir Putin.