ZAHONY, Hungary (AP) — Some of the 1 million people who have fled Russia's devastating war in Ukraine count among society's most vulnerable, unable to decide on their own to flee and needing careful assistance to make the journey to safety.

In the Hungarian town of Zahony on Wednesday, more than 200 Ukrainians with disabilities — residents of two care homes in Ukraine’s capital of Kyiv — disembarked into the cold wind on a train station platform after an arduous escape from the violence gripping Ukraine.

The refugees, many of them children, have serious mental and physical disabilities, and were evacuated from their care facilities once the Russian assault on the capital intensified.

“It wasn't safe to stay there, there were rockets, they were shooting at Kyiv,” said Larissa Leonidovna, the director of the Svyatoshinksy orphanage in Kyiv. “We spent more than an hour underground during a bombing.”

Russia's intensifying attack on Ukraine has forced 1 million people to leave in what one U.N. official predicted could become Europe's “biggest refugee crisis this century.”

The exodus tallied early Thursday by the U.N. refugee agency after one week of Russian fighting is without precedent in this century for its speed and amounted to more than 2% of Ukraine’s population.

More than half of the refugees — nearly 505,000 — have gone to Poland, while more than 116,300 have entered Hungary and over 79,300 have crossed into Moldova, according to earlier figures. Another 71,000 have fled to Slovakia, and some 69,600 have gone to other European countries.

While many of those fleeing are able-bodied adults, choosing to brave long and sometimes dangerous journeys to bring themselves and their families to safety, others are at the mercy of their caregivers to deliver them out of danger.

“These children need a lot of attention, they have illnesses and require special care,” said Leonidovna, the director of the Kyiv orphanage.

Moving from the train in groups of 30, the children — also from the Darnytskyy orphanage in Kyiv — were escorted to buses waiting to take them to Opole, Poland, where they would be settled and receive further care.

“There are 216 people altogether, the children along with their chaperones,” said Viktoria Mikolayivna, deputy director of the Darnytskyy home.

Cold weather gripping Eastern Europe on Wednesday made conditions even harder for those fleeing into countries neighboring Ukraine.

At the border area of Palanca in southern Moldova, a country that shares a long border with Ukraine, temperatures hovered around freezing and a fresh blanket of snow covered the ground.

Mothers with young children came wrapped in blankets and clothing, but the cold weather has made an already desperate situation even worse.

Julia, a 32-year-old mother with a 3-year-old child, tried to calm her son who was burning with fever. She felt helpless, she said, but is proud that she made the decision to help her family.

“Thank God that I can protect my family, but I didn’t want to leave my country. But I had to find another way to protect my family,” she told The Associated Press.

Braving snow and sub-freezing temperatures, thousands of refugees continued to flee Ukraine into neighboring Romania through the Siret border crossing.

Alina Onica, a 41-year-old Red Cross volunteer in Siret, said that the freezing weather and snow are only adding to the challenges and needs of the refugees being displaced by war.

“It made it more difficult because many left their homes a couple of days ago, and all they had was the clothes on their backs,” she said. "They have been asking for gloves, hats, and blankets. It’s a humanitarian crisis and we’re hoping it will end soon.”

Nastya Kononchuk, who hopes to reach the Bulgarian capital of Sofia to wait out the war with her dog, said she is originally from the Black Sea city of Odesa but was living in Kyiv. Her husband drove her to the Romanian border, but then returned to joined Ukraine's armed forces.

“It was a very long road and very scary," she said of the journey, when she heard the thud of missiles all around. "You don’t understand, ‘Is it ours or is it enemy?’"

“Maybe it's okay that now we don’t have children," she added. "But we have our dog, it is our child."

Victoria Baibara, who left Kyiv two days ago with her 6-year-old son after witnessing escalating bombing in the capital, arrived in Romania on Wednesday and will travel to Istanbul to stay with friends, she said.

“It’s so hard, it’s hard for a child, we can’t explain to him why we should leave our home, why we hear these bombs," the 29-year-old said. "He is also very scared. I am also very scared. ... It’s so cold and it was hard to stay with a child in the snow.”

Marya Unhuryan, from Chernivsti in western Ukraine, came by car to Siret with her 9-year-old daughter and other relatives, all women.

“I feel a lot of pain. ... Just pain. A lot of pain for my country and my people," she said. “She’s 9 years old and she does not understand the situation. She just wants to eat pizza in Italy and go to Disney in France.”

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AP journalists Stephen McGrath and Renata Brito in Siret, Romania, and Helena Alves in Palanca, Moldova, contributed to this report.

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Follow the AP’s coverage of the war at https://apnews.com/hub/russia-ukraine

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