The Royal Collection has withdrawn permission for three 17th-century weapons to be loaned to the Kremlin Museums.
The swords were set to be used in an exhibition in Moscow called The Duel: from Trial by Combat to a Noble Crime.
The event, previously scheduled to launch on March 4, 2022, has been postponed.
In a boycott of Russia following President Vladimir Putin's invasion of Ukraine, the event's sponsor Alisher Usmanov was sanctioned earlier this month.
Alisher Usmanov had his UK assets frozen by the Government
Nick Potts
Mr Usmanov, a Russian oligarch with prior connections to Everton Football Club and Arsenal, has been banned from entering the UK.
Kremlin Museums said: “The core of the project consists of exhibits from European museums, which were forced to withdraw them before the time due to the geopolitical situation.”
A spokesman for the Queen’s collection said: “A decision to postpone a loan of three swords from the Royal Collection to the Kremlin Museums in Moscow was made in mid-February.”
A duelling gauntlet (1610-1650) is also being withheld by The Royal Collection
Royal Armouries Collections
The weaponry included in the collection included one which is believed to have belonged to King Charles I.
Currently, no new date has been set for the exhibition.
This comes as the Foreign Secretary Liz Truss has pledged to continue to hit hard those close to Vladimir Putin for their “complicity in Russia’s crimes in Ukraine” as she announced a fresh round of sanctions aimed at those linked to the Kremlin.
More than 300 new listings have been made under the UK’s sanctions regimes, targeting those well-connected with Russia’s leader.
An update to the Gov.uk website on Tuesday said that 350 new listings had been made under the Russia sanctions regime.
The Foreign Office later said Ms Truss was to announce more than 370 “Russian and Belarussian sanctions”, bringing the total number of individuals, entities, and subsidiaries put under strict measures to over 1,000 since the invasion of Ukraine began.
It is understood the new additions will bring the UK in line with restrictive measures already announced by the European Union and by other allies.