The Russian embassy in London described Ukrainian President Volodymyr Zelensky’s trip to the UK on Wednesday as a “hasty event,” “theatrical performance,” “fundraising event,” and “ex-comedian in a green sweatshirt now on tour around Europe.”

In response to the UK saying it’s “actively looking” at whether to send fighter jets to Ukraine, the embassy warned that “Russia will know how to respond to any unfriendly actions by the British side.”

Earlier on Wednesday, British Prime Minister Rishi Sunak said “when it comes to the provision of military assistance to Ukraine, nothing is off the table” when asked whether the UK will provide fighter jets to Ukraine.

And Zelensky hailed his visit, noting the two countries had reached an agreement on a “powerful defense package.”