THE FRESH BYTES
Britney Griner, a US basketball star, was detained in Russia in February as two cartridges of cannabis oil were found in her luggage in Moscow.
The US Government was willing to free Bout, who was nicknamed "The Merchant of Death." He was caught selling the arms to be used against the US.
Months of negotiation took place before the release between Bill Richardson and his top deputy, Mickey Bergman.
Finally, Bout has also been flown safely to the airport, where Griner was greeted by US officials and Bout by a Russian official.