Charities have claimed the G7 has chosen to ‘cook the books’ on the pledge.
Meanwhile, former PM Gordon Brown says not providing more jabs is an ‘unforgivable moral failure’.
Tensions have also simmered as foreign secretary Dominic Raab claims French President Emmanuel Macron has been ‘offensive’ by suggesting Northern Ireland was not part of the country.
Speculation had been mounting that Mr Biden’s strong commitment to his Irish roots could cause difficulties in US-UK relations.
But Mr Johnson insisted today the Brexit row had not overshadowed the first in-person G7 conference in two years.
He told a press conference: ‘Of course we make the point continuously we are part of one great, indivisible United Kingdom.’
The Tory leader then added: ‘What I am saying is that we will do whatever it takes to protect the territorial integrity of the UK, but actually what happened at this summit was there was a colossal amount of work on subjects that have absolutely nothing to do with Brexit.’
This is a breaking news story, more to follow soon…Check back shortly for further updates.
Got a story? Get in touch with our news team by emailing us at firstname.lastname@example.org.Or you can submit your videos and pictures here.
For more stories like this, check our news page.
Follow Metro.co.uk on Twitter and Facebook for the latest news updates.You can now also get Metro.co.uk articles sent straight to your device. Sign up for our daily push alerts here.
Get your need-to-know
latest news, feel-good stories, analysis and more
Thanks for reading the whole article. If you wish to get an daily update about Joe Biden arrives at Windsor Castle for tea with the Queen , click on the bell button to subscribe for the notifications.