Polish soldiers patrol Poland/Belarus border near Kuznica, Poland, in this photograph released by the Territorial Defence Forces, November 15, 2021. DWOT/Handout via REUTERS

Migrants gather on the Belarusian-Polish border in an attempt to cross it at the Bruzgi-Kuznica Bialostocka border crossing in the Grodno Region, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Migrants gather on the Belarusian-Polish border in an attempt to cross it, while Polish military police stand guard on the Polish side of the border, at the Bruzgi-Kuznica Bialostocka border crossing in the Grodno Region, Belarus November 15, 2021. Leonid Scheglov/BelTA/Handout via REUTERS

Migrants walk towards the Bruzgi-Kuznica Bialostocka border crossing in an attempt to cross the Belarusian-Polish border in the Grodno Region, Belarus November 15, 2021. Leonid Scheglov/BelTA/Handout via REUTERS

Kader, 39, a Syrian migrant from Homs, is rescued by medics at an ambulance during the migrant crisis at the Belarusian-Polish border, near Topczykaly, Poland, November 14, 2021.

Migrants gather for the distribution of humanitarian aid in a makeshift camp on the Belarusian-Polish border in the Grodno region, Belarus November 14, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Polish soldiers patrol Poland/Belarus border in undisclosed location in Poland, in this photograph released by the Territorial Defence Forces, November 14, 2021. DWOT/Handout via REUTERS

A migrant holds a child at the Bruzgi-Kuznica Bialostocka border crossing on the Belarusian-Polish border in the Grodno Region, Belarus November 15, 2021. Leonid Scheglov/BelTA/Handout via REUTERS

A child reacts as migrants gather at the Bruzgi-Kuznica Bialostocka border crossing in an attempt to cross the Belarusian-Polish border in the Grodno Region, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Migrant children are seen at the Bruzgi-Kuznica Bialostocka border crossing on the Belarusian-Polish border in the Grodno Region, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Migrants gather around a fire in a makeshift camp on the Belarusian-Polish border in the Grodno region, Belarus November 14, 2021. Picture taken November 14, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

A woman reacts in a migrants' makeshift camp on the Belarusian-Polish border in the Grodno region, Belarus November 14, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

A man holds a child as migrants gather on the Belarusian-Polish border in an attempt to cross it at the Bruzgi-Kuznica Bialostocka border crossing in the Grodno Region, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Migrants gather on the Belarusian-Polish border in an attempt to cross it at the Bruzgi-Kuznica Bialostocka border crossing in the Grodno Region, Belarus November 15, 2021. Picture taken with a drone. Leonid Scheglov/BelTA/Handout via REUTERS

Migrants gather on the Belarusian-Polish border in an attempt to cross it at the Bruzgi-Kuznica Bialostocka border crossing, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Belarusian service members stand guard as migrants gather for the distribution of humanitarian aid in a makeshift camp on the Belarusian-Polish border in the Grodno region, Belarus November 14, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

People gather in a migrants' makeshift camp on the Belarusian-Polish border in the Grodno region, Belarus November 14, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Migrants set up tents at the Bruzgi-Kuznica Bialostocka border crossing on the Belarusian-Polish border in the Grodno Region, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS

Migrants gather on the Belarusian-Polish border in an attempt to cross it at the Bruzgi-Kuznica Bialostocka border crossing, Belarus November 15, 2021. Oksana Manchuk/BelTA/Handout via REUTERS