Theresa May must look at clamping down on high-profile Russian oligarchs if she wants to retaliate for the poisoning of Sergei Skripal.
That's the view of journalist and author Margaret Gilmore, who spoke to Julia Hartley-Brewer after May gave Vladimir Putin an ultimatum, demanding he explain Skripal's poisoning within 24 hours or face reprisals.
Gilmore, a journalist and fellow of the Royal United Services Institute thinktank, said "most people would go for looking at the oligarchs who are bringing their money over here, who love London, who are friends with Putin."
A number of high-profile Russian oligarchs have bought huge properties in London, including Roman Abramovich and Alisher Usmanov, owners of Premier League football teams Chelsea and Arsenal respectively. This band of super-wealthy individuals faced scrutiny even before Skripal's poisoning; last month, reports emerged that officials were preparing to seize assets of those oligarchs suspected of corruption.
Gilmore also suggested that Britain could now begin the asset seizure process in earnest, and copy America by limiting visas.
She also suggested that May's government might engage in "tit-for-tat" measures, with Russian diplomats being sent back, as part of the retaliation against Putin.