During his trip, William praised British and Polish troops for “defending our freedoms”, which the Russian foreign ministry’s press director Maria Zakharova hit back at.
She used Russian-style naming customs to mock the prince while referencing the UK supplying Ukraine with uranium shells for Challenger 2 tanks.
She said: “I wonder if William Charles-ovich brought depleted uranium ammunition for his troops.”
While in the Polish capital Warsaw, William was greeted with cheers and crowds of royal well-wishers, even posing for pictures with some.
He also visited the Tomb of the Unknown Soldier where he laid a wreath with the handwritten note: “In memory of those who made the ultimate sacrifice.”
During his trip to the Eastern European nation he had a “warm and friendly” meeting with Polish President Andrzej Duda, who will be at the King’s Coronation in May.
King Charles himself has said he wants to visit Ukraine again “before I get too old”.
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Speaking as he officially opened the new European Bank for Reconstruction and Development Headquarters, the monarch said: “I must go again before I get too old. I would like the chance to see Ukraine again.”
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