Ukrainian refugees look out of a train from Odesa at Przemysl Glowny train station, after fleeing Russia's invasion of Ukraine, in Przemysl, Poland, April 9, 2022. REUTERS/Leonhard Foeger TPX IMAGES OF THE DAY 

A pram left behind by Ukrainian refugees stands at the border checkpoint in Medyka, Poland, March 1, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

A Ukrainian refugee sits in the ticket hall at Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, in Poland, April 4, 2022. REUTERS/Kacper Pempel TPX IMAGES OF THE DAY 

Ukrainian refugees wait in line to get train tickets in the ticket hall at Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, in Poland, April 3, 2022. REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

A refugee waits in a car as an armoured personnel carrier of pro-Russian troops drives out of a checkpoint in the course of Ukraine-Russia conflict in the besieged southern port city of Mariupol, Ukraine March 24, 2022. REUTERS/Alexander Ermochenko TPX IMAGES OF THE DAY 

Ukrainian refugees rest in the ticket hall at Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, Poland, April 2, 2022. REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

Ukrainian refugee Zoya Vertegel, age 85 waits to board a train, bound to Krakow on the platform at Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, Poland, March 24, 2022.REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

Ukrainian refugees rest in the ticket hall of Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, in Przemysl, Poland, March 26, 2022.REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

Ukrainian refugee Polina, age 8 from Kharkiv looks out of a train window bound for Warsaw, at Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, Poland, March 23, 2022.REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

Two refugees kids from Ukraine, fleeing the Russian invasion of Ukraine, runs towards a bus at a newly built arrival centre on the tarmac of the former Tegel airport in Berlin, Germany, March 22, 2022. REUTERS/Hannibal Hanschke TPX IMAGES OF THE DAY 

Refugees fleeing the ongoing Russian invasion of Ukraine wait for hours to board a train to Poland, outside the train station in Lviv, Ukraine, March 8, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

A Ukrainian refugee walks through the station after arriving on a train from Odesa at Przemysl Glowny train station, after fleeing the Russian invasion of Ukraine, in Przemysl, Poland, March 21, 2022.REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

A Ukrainian woman and her family sit in a taxi with the colours of the Ukrainian flag upon arriving in Madrid with a group of Spanish taxi drivers who drove to Poland to support the mass evacuation of refugees, in Madrid, Spain, March 17, 2022. REUTERS/Susana Vera REFILE - QUALITY REPEAT TPX IMAGES OF THE DAY 

Lisa, 21, kisses her daughter Lea, 6 months old, from Sloviansk, Donetsk Oblast, while playing at temporary accommodation after fleeing the Russian invasion of Ukraine, in Rzeszow, Poland, March 16, 2022. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

A Ukrainian refugee cries as she says goodbye to a family member traveling to Budapest after arriving from the border with Ukraine fleeing their country following the Russian invasion, at North Railway Station in Bucharest, Romania, March 14, 2022. REUTERS/Edgard Garrido TPX IMAGES OF THE DAY 

A Ukrainian refugee weaves camouflage nets for the Ukrainian army at a public library, amid the Russian invasion of Ukraine in Krakow, Poland, March 14, 2022. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

A girl sleeps on the lap of her brother as they wait for their transfer, after fleeing the ongoing Russian invasion of Ukraine, outside the main train station in Lviv, Ukraine, March 14, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

A child pets a cat in a bus for refugees fleeing Russia's invasion of Ukraine, in Lviv, Ukraine, March 13, 2022. Picture taken through a glass window. REUTERS/Pavlo Palamarchuk TPX IMAGES OF THE DAY 

Luggage and toys of Ukrainian refugees who have nowhere to go and arrived by bus from Przemysl, are pictured at the International Youth Meeting Center, around two kilometres away from the former Nazi German Auschwitz-Birkenau death camp, where they are provided with temporary accommodation, in Oswiecim, Poland, March 13, 2022. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

A girl fleeing the ongoing Russian invasion carries her cat as she leaves the platform after arriving by a train from north eastern Ukraine, at a train station in Lviv, Ukraine, March 12, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

A boy plays basketball with a plush toy inside the sports hall of a primary school, transformed into temporary accommodation for people fleeing the Russian invasion of Ukraine, in Przemysl, Poland, March 8, 2022. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

Rita and her daughter Vika, refugees fleeing from Kyiv, arrive on a train from Przemysl at Berlin's central station, following Russia's invasion of Ukraine, in Berlin, Germany March 7, 2022. REUTERS/Lisi Niesner TPX IMAGES OF THE DAY 

Refugees evacuated on a train from Kyiv, following the Russian invasion of Ukraine, wait for transfer to Poland outside the train station in Lviv, Ukraine, March 7, 2022. Picture taken with long exposure. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

A woman from Ukraine reacts as she receives a hug from a volunteer after arriving at Berlin's central station, following Russia's invasion of Ukraine, in Berlin, Germany March 7, 2022. REUTERS/Lisi Niesner TPX IMAGES OF THE DAY 

A refugee holds her dog as they queue for trains to Poland following the Russian invasion of Ukraine, at the train station in Lviv, Ukraine, March 7, 2022. REUTERS/Marko Djurica TPX IMAGES OF THE DAY 

A child looks out from a tent at the temporary accommodation and transport hub for refugees at a former shopping mall, after fleeing the Russian invasion of Ukraine, in Przemysl, Poland, March 6, 2022. REUTERS/Yara Nardi TPX IMAGES OF THE DAY 

People wait to board a train towards Poland as they flee Russia's invasion of Ukraine, in the train station in Lviv, Ukraine March 5, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

Refugees who fled from the Russian invasion in Ukraine rest inside a temporary camp at the train station in Przemysl, Poland, March 2, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

Refugees brave the cold in a frozen field after they fled from Ukraine because of the Russian invasion at the border checkpoint in Medyka, Poland, March 1, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

A Ukrainian refugee reacts at a protest organised by Hungary's opposition members, outside the headquarters of the Moscow-backed International Investment Bank, after Russia's invasion of Ukraine, in Budapest, Hungary March 1, 2022. REUTERS/Marton Monus TPX IMAGES OF THE DAY 

Children are seen in a bus after fleeing Russia's military operation against Ukraine, in Athens, Greece, February 28, 2022. REUTERS/Costas Baltas TPX IMAGES OF THE DAY 

The Ukrainian flag is reflected on the surface of a train carrying refugees arriving from Poland at Berlin's central train station, following Russia's invasion of Ukraine, in Berlin, Germany, February 28, 2022. REUTERS/Fabrizio Bensch TPX IMAGES OF THE DAY 

Mark Goncharuk, a young boy from Kyiv, reacts as he talks about leaving his father behind as he travels with the rest of his family towards the border, following Russia's invasion of Ukraine, in Volytsia, Ukraine February 27, 2022, in this screengrab taken from a video. Video taken February 27, 2022. REUTERS/Natalie Thomas TPX IMAGES OF THE DAY 

A person fleeing the Russian invasion of Ukraine holds a hot beverage at a temporary camp in Przemysl, Poland, February 28, 2022. REUTERS/Yara Nardi TPX IMAGES OF THE DAY 

People fleeing the Russian invasion of Ukraine comfort each other as they sit in a bus at a temporary camp in Przemysl, Poland, February 28, 2022. REUTERS/Yara Nardi TPX IMAGES OF THE DAY 

A woman rests at a refugee shelter after fleeing Russia's invasion of Ukraine, in Beregsurany, Hungary, February 28, 2022. REUTERS/Bernadett Szabo TPX IMAGES OF THE DAY 

A woman fleeing Russian invasion of Ukraine sits at a temporary camp in Przemysl, Poland, February 28, 2022. REUTERS/Yara Nardi TPX IMAGES OF THE DAY 

Oksana, 30, holds a seven day old child as she arrived by bus at the parking lot organised to help Ukrainian refugees with transportation and accommodation to different cities in Poland and other countries after Russia launched a massive military operation against Ukraine, in Przemysl, Poland February 26, 2022. REUTERS/Kacper Pempel TPX IMAGES OF THE DAY 

Ukrainian refugees stand in a bus waiting to go to the nearby town of Przemysl after crossing the Ukraine-Poland border, amid the Russian invasion of Ukraine, in Medyka, Poland April 19, 2022. REUTERS/Darrin Zammit Lupi