Russia-Ukraine updates: Putin suspends key US-Russia nuclear treaty

White House spokesman John Kirby said during a briefing Tuesday that the U.S. could not “predict one way or the other” whether Bakhmut will fall to the Russians and if it does fall, “on what timeline.”

"We're watching this every day, and it is certainly true that the Russians are continuing to make incremental progress there,” Kirby said. “Again, I can't predict one way or the other whether it falls or it doesn't fall or on what timeline. They have made incremental progress again in just the last 24, 48 hours.”

He added that the U.S. did not think Russia obtaining control of Bakhmut would have any “strategic impact” on either the overall war or even fighting in that part of the country.

The U.S. thinks Russia -- and specifically the Wagner Group and its leader, Yevgeny Prigozhin, which is doing much of the fighting for Bakhmut -- wants to take over and benefit financially from gypsum and salt mines located in the area, Kirby said.

“Even if Bakhmut were to fall, it would not have a strategic impact on the overall war,” Kirby said. “I would go so far as to say it won't even have, necessarily, a strategic impact on the fighting in that part of the country. We think one of the reasons why Prigozhin is so interested in Bakhmut is because there's a gypsum mine there, and up in Soledar, there's a salt mine. And it's entirely possible that Mr. Prigozhin sees some economic benefit to him and his company to take Bakhmut and to take and hold Soledar.”

-ABC News' Ben Gittleson

Ukrainian Lt. Gen. Serhiy Nayev told ABC News in an interview that the U.S. provides "surveillance data," allowing the Ukrainian Armed Forces to more accurately pinpoint Russian targets within Ukraine's borders.

"This help is crucial for us," he said.

Nayev said he was in "constant contact" with American generals stationed in other parts of Europe. An exchange of data between the Ukrainians and Americans helped the Ukrainian military to pinpoint targets using US-supplied HIMARS rocket systems.

"This work goes perfectly in real time," he said.

-ABC News' Tom Soufi Burridge, Dragana Jovanovic and Ale Pavone

President Joe Biden will visit Poland on Feb. 20, on the eve of the first anniversary of the Russian invasion of Ukraine.

Biden will meet with Polish President Andrzej Duda as well as the leaders of the Bucharest Nine, a group of our eastern flank NATO allies, and he’ll deliver remarks to mark the one-year anniversary, White House press secretary Karine Jean-Pierre said Friday.

"President Biden will deliver remarks ahead of the one-year anniversary of Russia's brutal and unprovoked invasion of Ukraine, addressing how the United States has rallied the world, to support the people of Ukraine, as they defend their freedom and democracy, and how we will continue to stand with the people of Ukraine for as long as it takes," Jean-Pierre said.

-ABC News' Ben Gittleson

Romania, a member of NATO, said Friday a Russian missile had come within 22 miles of its border but that it did not cross into the country’s territory, countering a claim made by the Ukrainian military.

"The Romanian Air Forces’ air surveillance system detected on Friday, February 10th, an aerial target launched by a Russian Federation’s ship, navigating in the Black Sea, nearby the Crimean Peninsula. The target is most likely a cruise missile, which flew over the air space of Ukraine and the Republic of Moldova and reentered the Ukrainian air space without ever infringing Romania’s air space," Romanian Defense Minister Angel Tîlvăr said in a statement Friday.

Ukrainian officials had said earlier Friday that two Russian missiles crossed into the airspace of Moldova and Romania before entering Ukraine and being directed at targets in the country.

"Several Russian missiles passed through the airspace of Moldova and Romania. These missiles are a challenge to NATO and collective security. This is terror that can and must be stopped," Zelenskyy said Friday.

-ABC News' Will Gretsky