US President Joe Biden is heading to Europe ahead of a Nato summit after several allies questioned his decision to send cluster bombs to Ukraine.
The UK and Canada are among those who voiced concern about supplying the bombs, which are widely banned because of the danger they pose to civilians.
The US says they are needed because Ukraine’s weapon stocks are dwindling.
President Biden will arrive first in the UK this evening, before heading to Lithuania for this week’s Nato summit.
On Monday, he will meet Prime Minister Rishi Sunak to discuss various issues, including the war in Ukraine.
He will also meet King Charles on Monday – the first time the pair have met since the King was crowned.