Six countries have not made the guest list for the Queen's state funeral on Monday, September 19.
While most nations have been requested to send their head of state, those with no diplomatic ties to the UK have not been invited to attend.
The funeral, which in a break from tradition is the first one to be held at Westminster Abbey in more than 300 years, has taken huge levels of planning.
Plans for the Queen's funeral have reportedly been drawn up since the 1960s, with the late monarch reportedly being heavily involved.
Despite no official guest list being published, many presidents and prime-ministers have announced they will attend the historic event in central London.
Among the first to declare he would be attending was US President Joe Biden, who is flying in to London with his wife Jill.
But representatives from Russia, Syria, Afghanistan, Belarus, Myanmar and Venezuela will not be present at the Queen's funeral.
It has been reported that those who hold the Victoria Cross or George Cross, two of the highest honours the UK Government can bestow on its citizens, have been requested to attend.
The UK does not have diplomatic relations with Syria or Venezuela, which is why those nations while The political situation in Afghanistan since the Taliban swept to power a year ago means no representative has been invited.
Meanwhile a further three countries - Iran, North Korea and Nicaragua - have only been invited at ambassador level.
Russia says the decision not to invite Vladimir Putin and other dignitaries to the Queen's funeral is “profoundly immoral” and “blasphemous”.
The UK has been a strong supporter of Ukraine in the ongoing war, and has provided financial assistance, aid and weapons to the country since the invasion.
Russia's foreign ministry spokeswoman Maria Zakharova called the snub an "attempt to use the national tragedy for geopolitical purposes".
She said: "We see this British attempt to use the national tragedy, which has touched the hearts of millions of people around the world, for geopolitical purposes to settle scores with our country... as deeply immoral.
"This is particularly blasphemous towards Elizabeth II's memory."
Zakharova went on to say that the late monarch did not interfere with politics and so they should not play a part in the invite list.
She also went on to offer Russian condolences to the British people “for the great loss that befell them”.
The task of organising the funeral presents a huge challenge, with 3am practice runs having taken place over the past few days in order to prepare for the momentous day.
New Zealand Prime Minister Jacinda Ardern will make the near 24-hour journey with her delegation, as will Australian PM Anthony Albanese.
Canada’s Justin Trudeau has also confirmed his attendance, alongside France’s Emmanuel Macron and Germany’s Frank-Walter Steinmeier.
Italy’s Sergio Mattarella, Turkey’s Recep Tayyip Erdogan and Brazil’s Jair Bolsonaro are among the presidents attending, along with the European Commission’s Ursula von der Leyen.
King Felipe of Spain and his wife, Queen Letizia, are among the European royals who will attend.
And the Japanese government confirmed Emperor Naruhito and Empress Masako will travel for the funeral.
The move is a huge symbol of respect between the Japanese leader and the Queen, as the nation's emperors traditionally stay away from funerals for religious reasons.
The Commonwealth realms can send prime ministers plus a guest, governors general plus a guest and the high commissioner.
They are also allowed to bring 10 ordinary citizens - who are usually chosen for their 'extraordinary contributions to their communities'.
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