THE SALISBURY POISONINGS

THE CLAIM

That Russian military intelligence attempted to assassinate a former double agent on British soil using a military nerve agent, and in doing so killed an uninvolved member of the public.

THE THEORY, AS ITS PROPONENTS TELL IT

The identification of the suspects is the part that distinguishes this from most state assassination claims, because it was done in public from open sources.

Sergei Skripal, a former GRU officer who had spied for Britain and been exchanged in a spy swap, was found with his daughter unconscious on a bench in Salisbury. Both survived after prolonged treatment. A police officer was also hospitalised.

The agent was identified as a Novichok-class organophosphate, confirmed independently by the Organisation for the Prohibition of Chemical Weapons. These compounds were developed by a Soviet state programme and are not obtainable commercially.

Two men travelling as Alexander Petrov and Ruslan Boshirov were identified from CCTV and border records. They gave a television interview claiming they had come to see the cathedral spire. Open-source investigators at Bellingcat then identified them from leaked databases as GRU officers Anatoliy Chepiga and Alexander Mishkin, and a third officer was later charged.

Four months later Dawn Sturgess died after her partner found a sealed counterfeit perfume bottle in a charity bin and gave it to her. It contained the agent. A public inquiry into her death reported in 2025 and concluded the Russian state was responsible.

WHAT IS KNOWN

The agent identification is independently confirmed by the OPCW, which is not a party to the dispute.

The suspects' movements are documented by CCTV, hotel traces and border records. Contamination was found in their hotel room.

Bellingcat's identifications were made from open and leaked Russian records and have not been credibly rebutted.

Russia denies involvement and has offered several alternative accounts. It has not explained the presence of a Novichok-class agent in Wiltshire.

EVIDENCE FOR

• Independent OPCW confirmation of a nerve agent produced only by a state programme.
• CCTV, border and hotel records placing two identified GRU officers in Salisbury on the day.
• Contamination traces found in the suspects' hotel room.
• A UK public inquiry in 2025 concluding Russian state responsibility for Dawn Sturgess's death.

EVIDENCE AGAINST (THE ALTERNATIVE ACCOUNTS)

• Russia's counter-claims, that the agent could have come from other stockpiles or was staged, have not been supported by any evidence and do not explain the suspects' movements.
• The suspects have never been tried, so the case against them has not been tested by cross-examination.
• The delivery method, a door handle, was not confirmed until later analysis and was initially uncertain, which produced some early reporting that did not hold up.

ASSESSMENT

Confirmed, and notable in this archive for the method of attribution rather than the act. The suspects were identified not by a leak or a defector but by journalists and volunteers cross-referencing CCTV against leaked databases, which is a genuinely new capability and one that did not exist for OSA-170 in 1978. The detail that should not be lost is Dawn Sturgess: the only person who died had no connection to intelligence, and was killed by the operation's discarded packaging four months later.

WHAT WOULD CHANGE THE GRADE

• CONFIRMED: the agent was independently identified by the OPCW as a Novichok-class compound, which is not obtainable commercially and comes from a state programme.
• The suspects were identified from CCTV, border records and hotel contamination, and then named as GRU officers by open-source investigators cross-referencing leaked Russian databases. That capability did not exist for OSA-170 in 1978.
• Russia's alternative accounts have produced no evidence and do not explain either the suspects' movements or the presence of the agent in Wiltshire.
• The detail most often lost: the only person who died, Dawn Sturgess, had no connection to intelligence and was killed four months later by the operation's discarded packaging.

FURTHER READING

• Poisoning of Sergei and Yulia Skripal · Wikipedia
• OPCW, report on technical assistance requested by the United Kingdom (2018)
• Dawn Sturgess Inquiry, report (2025)