Pelosi backs Zelensky in 'fight for freedom' on Kyiv visit

US Speaker of the House Nancy Pelosi voiced support for Ukraine's "fight for freedom" at talks with President Volodymyr Zelensky in Kyiv, US and Ukrainian officials said on Sunday.

"We are visiting you to say thank you for your fight for freedom... Our commitment is to be there for you until the fight is done," Pelosi told the Ukrainian leader at their meeting on Saturday, footage of which was released by his office. 

In a tweet, Zelensky thanked the United States "for helping protect the sovereignty and territorial integrity of our state" and for "leading strong support for Ukraine in its fight against Russian aggression."

The trip by a Congressional delegation had not been previously announced.

Speaking in the Polish city of Rzeszow on Sunday, Pelosi said her talks with Zelensky had focused on "security, humanitarian assistance, economic assistance and eventually rebuilding when victory is won". 

"We leave with a firmer understanding and more current understanding of what needs to be done, with a deeper appreciation and inspiration from those who are in the fight," she said.

Representative Jason Crow, a military veteran and House Intelligence Committee member, said it was essential the Ukrainians "have what they need to win".

"We are not interested in stalemates, we are not interested in going back to the status quo. The United States of America is in this to win it and with Ukraine until victory is won."

- 'More advanced drones' -

He said he had come to Ukraine with three areas of focus -- "weapons, weapons and weapons".

The nature of the war was evolving, with the conflict shifting from the north to the south and the east, which involved much more open terrain and a shift terms of weapony needs, said Crow, who is also on the House Armed Services Committee. 

"You’re more likely to see long-range rocket fire, long-range artillery fire, the use of armoured personnel carriers to move troops, tank formations, as opposed to the smaller ambushes and unconventional tactics that we saw in the early stages of this war," he said. 

"So the next phase of our support is starting to look like that too. You’re starting to see artillery, longer-range fires, more advanced drones, counter-artillery radar systems, things that will help the Ukrainians better engage at further distances."

Last week, Biden proposed a huge $33-billion (31-billion euro) package for arming and supporting Ukraine, and Pelosi said Washington was "already passing into legislation the initiatives" he had raised.

The US leader also outlined proposed new laws to allow using luxury assets stripped from Russian oligarchs to compensate Ukraine for the destruction caused by the war. 

US Secretary of State Antony Blinken and US Defence Secretary Lloyd Austin visited Kyiv last month.