The White House is considering the expulsion of 20 or more Russian diplomats in solidarity with Britain to enhance the special relations that unite both countries, based on a recommendation from the National Security Council. President Donald Trump is considering executing this option soon following the dispute between UK and Russia in response to the poisoning of a former Russian double agent Sergei Skripal and his daughter in England, according to sources in White House. The UK accused Russia of poisoning Skripal and indicated that Russian President Vladimir Putin is responsible for the attempt. London ordered 23 Russian diplomats back to Moscow last week after the country concluded that Russia was responsible for the poisonings. It is believed that the US had been waiting to see what members of the European Council would do, a source with knowledge of the discussions told CNN. On Friday, 10 European countries announced they would follow the United Kingdoms lead by also expelling Russian diplomats. Meanwhile, Russian spokesman Dmitry Peskov denied rumors that Skripal had sent a letter to Putin asking him to be allowed to return to Russia. Skripals friend, Vladimir Timoshkov told the BBC that 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. Timoshkov said Skripal had called him from London in 2012 and told him he had written to Vladimir Putin asking to be fully pardoned and to be allowed to visit Russia where his mother, brother and other relatives lived. The Russian Embassy in the UK tweeted on its official account denying the letter saying: "There was no letter from Sergei Skripal to President Putin to allow him to come back to Russia." Skripal, 66, and his daughter, 33-year-old Yulia, are still in coma after they were poisoned in the English cathedral city of Salisbury on March 4. The Russian ambassador to the UK Alexander Yakovenko sent a letter to police officer Nick Bailey, who was poisoned in the Sergey Skripal incident. He thanked the officer for being the first to respond and assured him Moscow wasn’t behind the poisoning. The Ambassador told Bailey that he was relieved to learn that the officer was feeling well enough to be discharged from hospital and reunited with his loved ones.“I wish you a full recovery and hope that you will be able to return to your normal life as soon as possible,” the letter read. Yakovenko also expressed “sincere gratitude” to Bailey for his bravery while “reacting to the assault on two Russian nationals, Sergey and Yulia Skripal who I hope will get well soon too.” "Please be assured that Russia has nothing to do with this reckless incident and is ready to cooperate with the British authorities with regard to the investigation both bilaterally and through international organizations," it added. According to media reports, Detective Sergeant Bailey was one of the first who tended to Sergei and Yulia when they were found unconscious on a bench in Salisbury so he was also exposed to a toxic agent and had to be taken to the hospital.