With the war continuing in Ukraine for over a month, it's not only the country's immediate neighbors which are seeing the arrival of refugees.  Countries further away like Greece have pledged to take in thousands and have already seen many make the journey.

Greece's border with Bulgaria has changed in recent days and weeks.  The dominance of Bulgarian trucks has now been overtaken by vehicles for those holding blue passports with a gold emblem.

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At the Promachona border check, Greece's northern border crossing with Bulgaria, hundreds of Ukrainians wait in line for hours every day, having left their old lives and loved ones behind.

More than 12,000 Ukrainians have sought refuge in Greece, around 4,000 of those are children. Up to 800 are arriving each day.

The vast majority enter the country through Promachonas.  Here specialized offices from the Ukrainian embassy have been set up to speed up processing.

"My family lives in Donbas and they have been living through war for the past eight years. I used to live in Kyiv and after this situation, I decided to leave because it was scary. You don't understand how it is. You don't know what will happen in an hour or even next minute," said Nashta.

Some of those at the border plan to stay in Greece with friends and family, while others say they'll travel on further.

"Russia has launched this attack, it's a large-scale special operation, it's a large-scale war. And Russia doesn't stop and keeps bombing. There is a lot of fear.  We have been here for several days, everything is going to be fine," said Ukrainian refugee, Ivanov Francisco.

After a difficult journey, the refugees are being welcomed in a nation which has been on the frontline of the continuing refugee crisis from Syria and Iraq, with more than one million people arriving in Greece since 2015.  The country has struggled to deal with that influx, putting a strain on resources and communities at a time when Athens was also battling a financial crisis.

Despite these ongoing issues, Greeks have opened their arms and homes to Ukrainians.