WASHINGTON — Ukraine’s push to ease restrictions on the use of weapons from the United States and Britain was expected to be discussed Friday in White House talks between President Joe Biden and Prime Minister Keir Starmer.

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 would 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, 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.

Blinken said he had “no doubt” that Biden and Starmer would discuss the matter, noting that the U.S. has adapted and “will adjust as necessary” as Russia’s battlefield strategy has changed.

Blinken spoke similarly in May, shortly before the U.S. allowed Ukraine to use American-provided weapons just inside Russian territory. The permitted distance has been largely limited to cross-border targets deemed a direct threat out of concern about further escalating the conflict.

Biden also has hinted that a change could be afoot. In an exchange with reporters this week about whether he was ready to ease weapons restrictions on Ukraine, he responded: “We’re working that out now.”

Putin said Thursday that allowing long-range strikes “would mean that NATO countries, the United States and European countries, are at war with Russia.” His remarks were in line with the narrative the Kremlin has promoted since early in the war, accusing NATO countries of de-facto participation in the conflict and threatening a response.

Starmer said Thursday on his way to the U.S. that Britain does not seek conflict with Russia.

“Ukraine has the right to self-defense, and we’ve obviously been absolutely fully supportive of Ukraine’s right to self-defense,” he said.

On Friday, Russia accused six British diplomats of spying and said it would expel them. Starmer’s government called the accusation baseless and linked it to Britain’s expulsion of Moscow’s defense attache in London over spying allegations in May.

Ukrainian President Volodymyr Zelenskyy has pressed U.S. and allied military leaders to allow his forces to use Western weapons to target Russian air bases and launch sites far from the border as Russia has stepped up assaults on Ukraine’s electricity grid and utilities before winter.

“The war must become more difficult for Russia — that is the only way to make them realize it must end,” he posted Friday on social media.

Zelenskyy’s appeal has garnered support in U.S. and European security and diplomatic circles, including from some former U.S. generals and diplomats, lawmakers and security analysts. They argue that Russia’s previous threats of escalation against the West have proven hollow and that the U.S. restrictions on weapons are making it impossible for Ukraine to gain the battlefield momentum it needs.

Even a few Ukrainian strikes on military targets deeper into Russia would put more strain on Russian logistics, troops and other resources, said George Barros, a security analyst for the Institute for the Study of War.

Zelenskyy also wants more long-range weaponry from Washington, including the Army Tactical Missile System, known as ATACMS.

Lt. Col. Charlie Dietz, a Pentagon spokesperson, said ATACMS would not be the answer to the main threat Ukraine faces from Russian glide bombs, which are being fired from more than 185 miles away, beyond the reach of ATACMS.

American officials also do not believe they have enough of the weapon systems available to provide Ukraine with the number to make a substantive difference on the ground, one of the U.S. officials said.