Ukraine's allies have pledged to send more weapons to help it defend against a renewed Russian offensive.
The US and other allies vowed to send artillery, anti-tank and air defence aid to Kyiv, during a 90-minute video call on Tuesday.
Ukraine says it needs the weapons to help defend itself as Russia launches a new campaign in the country's east.
Clashes there have marked what Ukraine leader Volodymyr Zelensky said was the start of the "battle for the Donbas".
"This will become an artillery conflict," UK Prime Minister Boris Johnson said in parliament after the meeting with other leaders.