Goldman Sachs announced Thursday that it will be shutting down its operations in Russia.

“Goldman Sachs is winding down its business in Russia in compliance with regulatory and licensing requirements," Goldman Sachs said in a statement.

The company added, "We are focused on supporting our clients across the globe in managing or closing out pre-existing obligations in the market and ensuring the wellbeing of our people."

-ABC News' Victor Ordoñez

Samaritan’s Purse opened an outpatient clinic just outside the train station in Lviv on Thursday and has already treated its first patients.

Some people have evacuated so quickly they left their homes without their medicine -- and by the time they made it to Lviv they were in desperate need, Mark Agness, an emergency room doctor from California, told ABC News. Pregnant women and newborns are also common.

"That’s why we do this … it’s really the parable of the Good Samaritan. Help thy neighbor -- well they’re my neighbor," said Agness.

Chelsea Musick, a nurse from Iowa, has been with the organization for years and said working in Ukraine is different. Unlike other humanitarian disasters, this was entirely man made, she said. She described the patients she’s seeing as having a "haunted" look in their eyes.

Samaritan’s Purse is also building a large field hospital, which they expect to be operational by the weekend, in the parking garage of a local mall, a few minutes away from the train station. The hospital will have enough room for 15 surgeries a day and will be able to increase beds as needed.

The operation is primarily funded by individual donors from the U.S., the organization said. Two airlifts of supplies have already been coordinated from the U.S.

-ABC News' Irene Hnatiuk, Maggie Rulli and John Templeton

In a college gym-turned-shelter, Kyrill Nodikov, a Ukrainian poet who has been published in Ukraine and Russia, told ABC News he and his 20-year-old son are ready to enlist in the war.

Nodikov was seeking refuge in a shelter with his wife, their three kids, a dog and a tabby cat.

There are thousands of families struggling with the same dilemma: whether to take their animals, which makes their exodus far more complicated, or leave them behind. Most have stayed loyal to their animals.

When asked what it would be like to take care of her twins and pets by herself, Oksana, Nodikov's wife, started crying.

Sitting on mats on the floor of the gymnasium, the family gathered in a huddle, hugging, holding and comforting Oksana. And then they did the Ukrainian version of a pinky promise: hooking their pinkies and saying, “Peace, friendship, bubble gum."

-ABC News' Matt Gutman, Brandon Baur and Scott Munro

Russia-backed forces have allegedly seized several neighborhoods in Mariupol amid an ongoing operation to "liberate" the southeastern Ukrainian port city.

"The operation to liberate the city of Mariupol of nationalists has been continuing," Russian Ministry of Defense spokesman Igor Konashenkov said at a press briefing. "Donetsk People's Republic militia units have taken control of the neighborhoods of Azovsky, Naidenivka, Lyapyne, and Vynohradar and approached the Azovstal plant. The western neighborhood in the western part of the city has been liberated."

The self-declared Donetsk People's Republic is one of two Russia-controlled separatist areas in eastern Ukraine's Donbas region.

The Russian forces charging toward Kyiv haven't made progress in the last day as they face Ukrainian resistance and low food and gas supply, a senior U.S. defense official told reporters Tuesday.

However, it could be a deliberate pause, the official said. "Part of the stall could be ... as a result of their own self-determined sort of pause in operations -- that they are possibly regrouping, rethinking, reevaluating," the official said.

The U.S. believes Russian forces "have committed now more than 80% of what was their pre-staged combat power," the official added.

The official said some Russian soldiers weren't told they were going into combat. The official said "not all of them were apparently fully trained and prepared."

The strong Ukrainian resistance has also hurt morale, according to the official.

Russia has now launched more than 400 missiles on Ukraine, the official said. The U.S. believes Russia has launchers that could be used for thermobaric weapons, but cannot confirm their use, the official said.

Russian forces are making the most progress in the south. Russians are attacking Kherson in south Ukraine, which "appears very much to be contested city at this point," the official said.

Russians are also approaching Mariupol in southeastern Ukraine, and while they haven't yet entered the city, "they are close enough now that they could attack Mariupol with long range fires," the official said.

Two towns on the path to Mariupol are believed to be occupied by the Russians, according to the official.

The U.S. believes the Russians hope to move north out of Mariupol up to the heavily-contested city of Kharkiv. The official said they believe Russian forces are trying to encircle Kharkiv.

The U.S. official noted that they've seen "certain risk-averse behavior by the Russian military" over the last week.

"Take the amphibious assault, for instance. They put those troops ashore a good 70 kilometers away from Mariupol because they knew Mariupol was going to be defended and they could put them ashore in an uncontested environment. And they still haven't reached Mariupol," the official said.

"They are not necessarily willing to take high risks with their own aircraft and their own pilots," the official said.

"And of course we're seeing that on the ground -- the fairly slow and steady progress that they have made, and you guys are seeing it for yourselves on the ground where ... units are surrendering, sometimes without a fight."

-ABC News' Matt Seyler