Poisoned former Russian double agent wrote to Putin for pardon, friend says

Poisoned former Russian double agent Sergei Skripal wrote to Vladimir Putin asking to be pardoned and to be able to visit his home country, a friend has said.
The former Russian intelligence officer, who came to Britain in 2010 as part of a spy swap, regretted being a double agent and wanted to visit his family, Vladimir Timoshkov told the BBC.