Heartbreaking images show the plight of tens of thousands who have left their homes and their country, to escape Moscow's forces and the ongoing invasion.
Refugees arrive in Poland in droves as Ukrainians desperately flee from the Russian army as the invasion continues into its sixth day.
Whilst military-fit men aged 18-60 are required to stay behind and fight, women and children have been pictured at the end of their journey to safety as they flee from artillery strikes, missile attacks and Russian troops.
Refugees have been sleeping on floors, wrapped in jackets and blankets, or huddled around fires in frozen fields where they stayed overnight after they made their way west to Poland.
Ukrainians slept and sheltered in frozen fields, huddling together for warmth near Medyka, the main border checkpoint between Ukraine and Poland.
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Poland has seen over half of all the refugees, and Medyka is the main point where they arrive on the border where tens if not hundreds of thousands of Ukrainian people have already flowed through.
Tear-jerking images show refugees laying on the ground, or stood together at dawn as they all hope to cross the border into safety.
Others show children sat on a bus, having made it into Poland.
As many have already made it into neighbouring countries like Poland, only yesterday huge crowds filled out Kyiv central train station, where a man was pictured saying goodbye to his daughter.
Many used these trains to travel westwards, and some were forced from there to travel via car, or even on foot to the border.
Whilst Poland has been the main destination for the majority of refugees, it is not the only one, with more images showing the tear-jerking snaps of loved ones being reunited in Tunisia.
At the Tunis-Carthage airport in the country, refugees were welcomed by family and friends.
So far, according to the UN Refugee Agency, 520,000 refugees have fled Ukraine for neighbouring countries, and this is a number which keeps rising.
UN refugee chief, Filippo Grandi, said the UN was planning for up to four million refugees in coming weeks if the conflict doesn't end.
He said: "We know that we are not even scratching the surface to meet the needs of Ukrainians."
Moldova was one of the first countries to accept refugees, and set up migrant help centres near the border to help those coming in.
By Sunday evening, the UN said that Hungary had taken in 71,158 people, Romania had received 43,184 Ukrainians, 41,525 refugees had made it to Moldova and 17,648 had come to Slovakia.
The four neighbouring nations had received a huge swathe of the migrants fleeing but Poland has so far received the most by far.
The UN has said that so far Poland has taken in over 280,000 refugees, over half of those who have fled, and the Polish government said a further 50,000 are arriving every day.
Similarly, Slovakia has said it is now accepting over 10,000 refugees a day.
This comes as today, Boris Johnson announced the UK will extend its efforts to help Ukrainian refugees after he was blasted for not doing enough.
On Sunday ministers announced close family members of people already settled in the UK could join them from Ukraine. But only close family members were eligible, which ministers claim could be up to around 100,000 people.
On top of that, one Tory MP claimed that those fleeing the war could use the 'fruit picker' seasonal visa to reach the UK.
However, today the PM hastily backtracked by offering more help. He said: “We will make it easier for Ukrainians already living in the UK to bring their relatives to our country.
"And though the numbers are hard to calculate, they could be more than 200,000”.
He added: “We’re extending the family scheme so that actually very considerable numbers would be eligible… you could be talking about a couple of hundred thousand, maybe more.
"Additionally we’re going to have a humanitarian scheme, and then a scheme by which UK companies and citizens can sponsor individual Ukrainians to come to the UK.”
The Prime Minister's official spokesman said: "So the expansion in terms of family members will cover adult parents, grandparents, children over 18 and siblings.
"That’s in addition to what was set out over the weekend.
"And then there will be the sponsorship schemed which the PM talked about [which doesn’t relate to people settled in the UK]".
Halyna Wright, 39, and her son Kyrylo are two of the over half a million who have fled their home in the last six days.
They travelled from Odesa, across the country fleeing to Poland and had to complete the final length of their journey walking 12 miles on foot.
She said: "It was very hard and it's still winter - there was snow," she said of the walk to the border.
"There were mothers with children, one, two years old - some of them even less than one... it was just terrible.
"While we walked, we saw so many times people left their baggage... they were so tired, they didn't have the energy, so just left it."
