Russia has condemned the UK after being among a handful of countries not invited to the Queen's funeral.
It said the snub is "deeply immoral" and Britain has "taken their side".
Hundreds of heads of state and foreign dignitaries are expected to attend Queen Elizabeth II's funeral at Westminster Abbey in London on Monday.
However, Russia, which invaded Ukraine seven months ago, is absent from the invite list.
In a statement posted on Russia's Ministry of Foreign Affairs website, Foreign Ministry spokeswoman Maria Zakharova confirmed Russia's "special military operation" in Ukraine was the reason they were not invited to Her Majesty's funeral.
"We regard this attempt to use a national tragedy, which has touched the hearts of millions of people across the world, for geopolitical goals and to settle scores with our country as deeply immoral," Zakharova said.
The statement goes on to accuse Britain of "making divisive statements in furtherance of its opportunistic aims" and siding with what Moscow refers to as Ukrainian "Nazis".
"Today the British elites have taken their side," Zakharova said.
"For our part, we express our deep condolences to people in the United Kingdom for their immense loss."
On February 24, Russia launched a full-scale attack on Ukraine, leaving an estimated 7.2 million Ukrainians displaced in what is deemed Europe's largest refugee crisis since World War II.
The UK has been supporting Ukraine throughout the invasion with money, weapons and aid and has imposed sanctions on Russia including a travel ban that includes Russian government officials and their family members and wealthy businessmen.
Belarus was also not invited due to its support of Russia's invasion of Ukraine and Myanmar was excluded due to its treatment of the Rohingya people.
North Korea and Nicaragua have been invited to send only ambassadors, BBC reported.
Typically, every country with "normal diplomatic relations" with the UK will be invited to the state funeral on Monday, CNN reported.
The countries are usually represented by their political leader, head of state, senior government member or ambassador to the UK.
Prime Minister Jacinda Ardern has flown to London to represent New Zealand at the funeral alongside other Kiwi representatives including the Māori King, Kiingi Tūheitia, former Governor-General Dame Silvia Cartwright, Victoria Cross for New Zealand recipient, Bill (Willie) Apiata and former Secretary-General of the Commonwealth, Sir Don McKinnon.
"It is a privilege to attend the funeral alongside other New Zealanders from different walks of life to pay our respects on behalf of all New Zealanders," Ardern said in a statement.
