On Thursday, he responded to a tweet from British Prime Minister Boris Johnson condemning the Russian government and promising to “work with international partners to ensure justice”.
Bailey wrote, “I have a lot to say about this tweet. But I can’t, and I won’t.”
His wife also responded to Johnson’s comments. “Justice will be beautiful. Actions speak louder than words,” Sarah Bailey wrote on Twitter.
“Nearly two and a half years have passed after the events in Salisbury and there has been no justice for Dawn and her family, no one for Skripal or Charlie or for us. Now it happened again,” she said.
“It seems that there are no consequences for the perpetrators. The government is right to condemn these actions, but in two and a half years, will they be forgotten? This is how we feel for us. #RIPDawn.”
Her partner, Charlie Rowley, was also hospitalized but later left. Skripal also survived the attack.
Billy contacted Novichok while investigating the poisoning of Skripal, a former KGB agent who ended up working for British intelligence. UK prosecutors said in 2018 that they had sufficient evidence to charge Russians with conspiracy to commit murder, but had not submitted requests to extradite the two men because the Russian constitution does not allow this.
The Kremlin has consistently denied involvement in these high-profile attacks. But Western governments, independent researchers, and observers of Russia see a consistent pattern of Russian state involvement in assassinations inside and outside the country.
But US President Donald Trump – who has faced sharp criticism for his kind approach to Russia – has been nearly silent about Navalny’s poisoning, and the US response on Wednesday came from a National Security Council spokesperson.
CNN’s Nathan Hodge contributed to this report.