Russia warns UK that troop deployment in Ukraine would be 'declaration of war'

A senior Russian official and ally of President Vladimir Putin has warned the U.K. that troop deployment in Ukraine would equate to a declaration of war with Russia.

Michael Dorgan is a writer for Fox News Digital and Fox Business.

The U.K. will provide around $3.2 billion of military aid to Ukraine over the coming year, its largest annual commitment since Russia's invasion nearly two years ago. You can send tips to michael.dorgan@fox.com and follow him on Twitter @M_Dorgan.

Medvedev, who served as Russian president from 2008 and 2012, also posited a hypothetical situation where Sunak would come under military fire while in the Ukrainian capital.