The Duke of Cambridge made a visit to the MI6 offices on Wednesday on the eve of Russia's invasion

As news trickled through in the early hours of the 23rd of February, millions of people around the world watched in horror as the Russian military began to invade Ukraine on the orders of Vladimir Putin.

Russian troops entered Ukraine at several different points along the country's massive border. This will come as a shock to many in the international community and means the Russian government will be forced to face a series of sanctions from the rest of the world.

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The Duke of Cambridge visited the Secret Intelligence Service in London on Wednesday morning, according to the Court Circular - an official record of past royal engagements.

While news of the meeting was not revealed until this morning, it is believed to have been a pre-schedule meeting and not directly linked to the Russian invasion.

Sources from Kyiv reported that across the day, hundreds of soldiers have been injured from the Russian bombing campaigns, and there have even been several fatalities.

The Court Circular also revealed a string of other engagements carried out by William, and his wife Kate, including a meeting on the Earthshot Prize - the award designed to incentivise change and help repair the planet - and phone calls to royals in Denmark.

It read: 'His Royal Highness, Joint Patron, the Royal Foundation of The Duke and Duchess of Cambridge, this afternoon held a Meeting at Kensington Palace on the Earthshot Prize.

'The Duchess of Cambridge, Joint Patron, the Royal Foundation of The Duke and Duchess of Cambridge, today carried out the following engagements in Copenhagen, Denmark.

'Her Royal Highness this morning visited Stenurten Forest Kindergarten, Ballerup.

'The Duchess of Cambridge later called upon The Queen of Denmark and The Crown Princess of Denmark at Amalienborg Palace.'