Sent_en: 2zh Relations between Britain and Russia have worsened recently, particularly after Russia's refusal to allow the extradition of a former KGB bodyguard suspected of murdering emigre Alexander Litvinenko in London last year.
Sent_yy: 英国和俄罗斯之间的关系最近恶化，特别是在俄罗斯拒绝允许引渡一名去年在伦敦前克格勃谋杀埃米格·雷亚历山大·利特维年科保镖之后。