- Russian ex-spy and daughter poisoned with nerve agent, police sayUSA TODAY
- Russian ex-spy and daughter were attacked with nerve agent, UK police sayLos Angeles Times
- The Latest: Police: Russian ex-spy poisoned with nerve agentWashington Post
- Sergei Skripal is not Litvinenko – and this is what that really meansThe Independent
- Ex-Russian Spy and Daughter Attacked With Nerve Agent, Not RadiationLive Science