WATCH: White House holds news briefing as UK leader Starmer meets with Biden

White House press secretary Karine Jean-Pierre held a news briefing on Friday as President Joe Biden and Prime Minister Keir Starmer met at the White House.

Watch the event in the player above.

Ukraine and many of its supporters in the U.S. and Europe want Biden to let Kyiv use the weapons to strike military targets deeper inside Russia, and there are signs Biden might shift U.S. policy. Russian President Vladimir Putin has threatened that Ukraine’s use of long-range weapons would put NATO at war with Moscow.

Two U.S. officials familiar with discussions about the weapons said they believe Starmer will seek Biden’s approval to allow Ukraine to use British Storm Shadow missiles for expanded strikes in Russia.

Biden’s approval is needed because Storm Shadow components are made in the U.S. The officials, who spoke on condition of anonymity to share the status of private conversations, said they believed Biden would be amenable.

No announcement on a decision was expected Friday, several U.S. officials said.

During this week’s visit to Kyiv by Secretary of State Antony Blinken and British Foreign Secretary David Lammy, Ukrainian officials renewed their pleas to use Western-provided long-range missiles against targets deeper inside Russia.