US President Joe Biden arrived in British capital, London, on an official visit.
During his visit, Biden will meet Britain's King Charles III and Prime Minister Rishi Sunak.
This visit comes a few days before the NATO summit at the level of leaders in Lithuania, during a difficult period that the alliance is going through due to Russian-Ukrainian war.
On Friday, US announced that it will send Ukraine cluster munitions - prohibited by more than 100 countries - as part of an $800 million security package, a move Ukraine said would have an "extraordinary psycho-emotional impact" on Russian forces, according to Reuters