(WASHINGTON) — The Pentagon has been providing daily updates on the Russian invasion of Ukraine and Ukraine’s efforts to resist.

Here are highlights of what a senior U.S. defense official told reporters on Monday:

Fallout from deadly airstrike near Polish border

On Sunday, Russian long-range bombers launched “more than a couple dozen” cruise missiles at a western Ukrainian training facility near Yavoriv, about 10 miles from the Polish border. All of the missiles were launched from Russian airspace, damaging at least seven buildings, according to the official.

The attack left at least 35 dead and 134 wounded, according to Ukrainian officials.

Russia also hit two airfields in western Ukraine on Friday in the towns of Lutsk and Ivano-Frankovsk.

During a Monday press briefing at the Pentagon, press secretary John Kirby said the strikes in western Ukraine are part of a broadening Russian assault across Ukraine.

“I wouldn’t think that that we would consider this or the other strikes in western Ukraine as some sort of turning point,” Kirby said, but adding, “The Russians clearly are expanding some of their targets sets.”

“If Mr. Putin was trying to signal his displeasure about a strong, united NATO with this war of his then he’s failed, because he’s getting exactly what he says he doesn’t want — a strong, united NATO on his Western flank,” Kirby said.

While there were 150 Florida National Guardsmen training Ukrainians on part of the base as recently as February, all U.S. troops and contractors were pulled from the country before the beginning of the invasion.

The strike occurred after the Kremlin claimed arms shipments to Ukraine are “legitimate targets,” but the U.S. official said no security assistance sites were hit in this case.

Kirby confirmed the training center was not being used to funnel U.S. weapons to Ukrainian forces.

“I would just tell you that we have multiple routes to get security assistance into the hands of the Ukrainians,” Kirby said.

In total, Russia has now launched more than 900 missiles against Ukraine, according to the senior U.S. defense official. This estimate is up from 810 on Friday.

Reports of Russia seeking military supplies from China

“I would just say that we’re going to watch that very, very closely. And as others in the administration have said, if China does choose to materially support Russia in this war, there will likely be consequences for China,” the official said.

Cease-fire talks

“We want to see the violence stop,” the official said. “All I can do is tell you what we’re seeing on the ground, and what we’re seeing on the ground is a continued military effort to subdue these population centers and to do it now with ever more violence using more and more long-range fires, which are increasingly indiscriminate in terms of what they’re hitting.”

Russian advance mostly stalled

“Almost all of Russia’s advances remain stalled,” the official said.

Kyiv: The Russians closest to Kyiv are still near Hostomel Airport to the northwest, about 9 miles (15km) from city center. Some troops are moving in behind those advance forces, “but not at a great pace,” the official said.

The forces approaching from the east are still about 12-19 miles from the heart of Kyiv, according to the official. This was the same estimate given by the official on Friday.

“No real progress to speak to,” the official said of these forces.

They’re facing heavy resistance from the Ukrainians. The U.S. assesses the defenders still have control of Brovary, just east of the capital, where in videos published last week we saw a column of Russian tanks hit.

Kharkiv: Significant fighting continues over Kharkiv, with Russians relying more and more on long-range missile attacks.

The U.S. sees a new line of advance with 50 to 60 vehicles moving from the southwest of Kharkiv down toward the town of Izyum.

“The assessment is that they are trying to block off the Donbass area and to prevent the flow westward of any Ukrainian armed forces that would be in the in the eastern part of the country, prevent them from coming to the assistance of other Ukrainian defenders near Kyiv,” the official said.

Mariupol: The city remains isolated and under heavy bombardment, with Russian forces to the north and east. Ukrainians continue to fight back, the official said.

Mykolayiv: Russian forces remain roughly where they were Friday, about six to nine miles northeast of the city. Ukrainians continue to resist.

It is unclear what the Russian plan is for Mykolayiv.

“It could be a left turn to move on Odessa from the ground or it could be they go north up towards Kiev,” the official said.

Odessa: The Pentagon still sees no sign of any looming amphibious assault on Odessa, according to the official.

Ukrainians going after Russian supplies

“The Ukrainians, as we’ve said all along, they’ve been quite creative here. They’re not simply going after combat capability — tanks and armored vehicles and shooting down aircraft — although they’re doing all that. They are also deliberately trying to impede and prevent the Russians’ ability to sustain themselves,” the official said, citing the long Russian convoy as one example.

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(WASHINGTON) — President Joe Biden’s dual promises to consider NATO’s Article 5 a “sacred obligation” but also not to have U.S. forces engage with Russia in Ukraine may be increasingly difficult as Russian President Vladimir Putin expands the scope of his attack — with a barrage of missiles striking near Ukraine’s border with NATO ally Poland over the weekend, along with intense shelling in Kyiv overnight.

The U.S. has also warned about a possible chemical weapons attack and a senior administration official told ABC News earlier Monday that Russia is “desperately” asking for Chinese help — with China “considering” giving the Russians “airstrike capabilities.”

But amid signs that Putin is escalating, it remains unclear what consequences Russia would face from the U.S.

Russian forces targeted a military training site over the weekend in western Ukraine that had housed Western volunteers and members of the Florida National Guard training Ukrainian counterparts before the invasion. At least 35 people were killed and 134 injured, according to Ukrainian officials. There were “no Americans at all working there,” Pentagon press secretary John Kirby said Sunday.

In what some are considering a provocative message to the West, the attack — just 10 miles from Ukraine’s border with Poland — has raised the prospect of the Kremlin being increasingly likely to target Poland or other NATO allies helping to supply Ukraine. That comes on top of concerns that Russia is laying the propaganda groundwork to use chemical weapons in Ukraine and falsely accuse the Ukrainian military of doing so first.

“They are clearly expanding some of their target sets here,” Kirby said at a Pentagon briefing Monday. “I want to be careful here that we’re not reducing the kind of damage and death he’s causing to some sort of message signaling. I think that’s being way too generous to what the Kremlin is trying to do inside Ukraine.”

At Monday afternoon’s White House press briefing, a reporter presented press secretary Jen Psaki with a list of horrors witnesses in Ukraine — “maternity wards being bombed, illegal weapons being used, pediatric hospitals being targeted” — and asked where Biden draws the line on military intervention, noting former President Barack Obama drew a red line for Syria with chemical weapons.

“You have to weigh how you can lead the world, how you can make very clear that actions are horrific, that they are not acceptable, they’re not aligned with global norms — while also thinking about our own national security interests,” Psaki said. “And starting World War III is certainly not in our national security interests. Putting U.S. troops on the ground in Ukraine to fight a war with Russia is not in our set national security interests.”

Pressed again later, Psaki repeated that Biden does not intend to send U.S. troops to Ukraine and would not specify what “severe consequences” Russia would face if it uses biochemical weapons. Asked then if it’s possible the White House has no consequences left to inflict on Russia, with severe actions like a no-fly zone, transporting jets and putting U.S. troops on the ground currently off the table, Psaki called that characterization “inaccurate.”

“Those are conversations that will happen continue to happen with our national security team and with our partners and allies around the world,” Psaki said.

Meanwhile Russia has repeatedly threatened to target other countries working to resupply Ukraine, declaring them parties to the conflict — and raising fears that an attack could trickle into Poland, a NATO nation, potentially prompting NATO allies to enter the war.

After the strike near the polish border over the weekend ABC News Chief Global Affairs Correspondent Martha Raddatz asked Pentagon press secretary John Kirby on “This Week,” “If they strike in Poland, what happens?”

“We take our Article 5 commitment very seriously,” Kirby said. “An armed attack against one is considered an armed attack against all. That is why, Martha, we continue to flow and to move and to reposition forces and capabilities along NATO’s eastern flank to make sure that we can defend every inch of NATO territory if we need to.”

“Now, there’s no reason we should need to because there’s no reason that there should be war in Ukraine as it is, and we’ve made it very clear to Russia that NATO territory will be defended not just by the United States, but by our allies,” he later added.

Republican Sen. Lindsey Graham, at a roundtable at Columbia Law School on Monday, said while he is against a no-fly zone over Ukraine, he would support one if Russia used chemical weapons — which the senator called “a war crime of monumental proportion.”

“If there’s a chemical attack by the Russians in Ukraine, that would be a war crime of monumental proportion and all the treaties we’ve tried to construct around the use of chemical weapons will be considered a joke if he doesn’t pay a price. So, I would be for a no-fly zone then,” Graham said

Negotiators from Russia and Ukraine met Monday to see if they could broker a ceasefire and a potential peace deal, but the virtual meeting was stopped due to what Ukraine’s presidential adviser called a “technical pause.” The talks are scheduled to continue Tuesday.

The fourth round of talks come as a senior U.S. official told Raddatz on Monday that Russian attacks on Ukraine will increase, with the western city of Lviv, a highly-populated area, among potential targets. Russia may target the city because “they want to create more terror,” the official said.

Over the weekend, Biden approved the shipment of $200 million in additional lethal aid to Ukraine, including antitank and antiaircraft weapons, after Congress approved a new aid package, with those materials expected to arrive in Ukraine from prepositioned U.S. military stations in Europe and the U.S.

Largely unified on the issue, Congress this week will also vote to codify Biden’s executive action taken Friday, which downgraded normal trade relations with Russia — the latest example of how lawmakers have pushed the White House to take forceful steps against Russia.

And amid fears China could supply ally Russia with weapons, national security adviser Jake Sullivan met in Rome on Monday with China’s top diplomat, Yang Jiechi, in the first high-level, in-person meeting since Russia’s invasion of Ukraine.

ABC News’ Luis Martinez, Conor Finnegan, Matt Seyler, Shannon Crawford and Benjamin Siegel contributed to this report.

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