The US President Donald Trump has landed in the UK ahead of a two-day NATO Summit in London.
The summit marks the 70th anniversary of what is the world’s largest military alliance; however, it is likely to be dominated by tensions over its future.
President Trump has continually claimed that many members are not spending enough money on defence.
Meanwhile there are also disagreements over Russia, the conflict in Syria and a row between the French and Turkish presidents over Turkey's recent assault on the region.
A spokesperson for the UK Prime Minister Boris Johnson said: "The PM's position is that NATO is the most enduring and successful alliance in military history and that it continues to adapt to the evolving threats that we face.”
“It is the cornerstone of Euro-Atlantic security and it helps to keep a billion people safe.
“The PM will emphasise that all members must be united behind shared priorities so NATO can adapt to the challenges ahead.”
The summit will include receptions at Buckingham Palace and Downing Street and a working session at a golf resort in outer London.
The NATO Leaders Meeting will get underway at the Grove Hotel in Watford tomorrow morning.
