Armoured vehicles drive past a monument to a steelworker in the course of Russia-Ukraine conflict in Mariupol, Russian-controlled Ukraine, February 10, 2023. REUTERS/Alexander Ermochenko 

A view shows a monument to a steelworker and a stele with the city name, in the course of Russia-Ukraine conflict in Mariupol, Russian-controlled Ukraine, February 10, 2023. REUTERS/Alexander Ermochenko 

A view shows a monument to a steelworker at the entrance to the city, in the course of Russia-Ukraine conflict in Mariupol, Russian-controlled Ukraine, November 9, 2022. REUTERS/Alexander Ermochenko 

Ukrainian border guards colonel Valeriy Padytel and cynologist Alina Panina, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, react as they speaks with Reuters, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

Ukrainian border guard colonel Valeriy Padytel, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, reacts as he speaks with Reuters, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

Ukrainian border guard cynologist Alina Panina, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, reacts as he speaks with Reuters, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

Ukrainian border guard cynologist Alina Panina, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, speaks with Reuters, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

Ukrainian border guards colonel Valeriy Padytel and cynologist Alina Panina, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, speak with their counterpart, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

Ukrainian border guard colonel Valeriy Padytel, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, reacts as he speaks with Reuters, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

Ukrainian border guard cynologist Alina Panina, captured during the Azovstal steelworks siege in Mariupol in May and released in the recent POW exchange, reacts as she speaks with her counterpart, as Russia's attack on Ukraine continues, in undisclosed location, Ukraine October 25, 2022. REUTERS/Gleb Garanich 

U.S. President Joe Biden speaks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

Pennsylvania Lieutenant Governor and U.S. Senate candidate John Fetterman delivers remarks as he attends a Labor Day celebration with U.S. President Joe Biden at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

Pennsylvania Lieutenant Governor and U.S. Senate candidate John Fetterman delivers remarks as he attends a Labor Day celebration with U.S. President Joe Biden at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

Pennsylvania Lieutenant Governor and U.S. Senate candidate John Fetterman gestures as U.S. President Joe Biden looks on as they attend a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden gets on a stand to deliver remarks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden looks on before delivering remarks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden eats a dessert as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden talks with people as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden takes his jacket off as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden delivers remarks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden shakes hand with a woman as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden talks with a woman as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden delivers remarks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden delivers remarks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden looks on as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden claps hands as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden and Pennsylvania Lieutenant Governor and U.S. Senate candidate John Fetterman interact with children as they attend a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden interacts with children as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

Pennsylvania Lieutenant Governor and U.S. Senate candidate John Fetterman looks on while attending a Labor Day celebration with U.S. President Joe Biden at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden looks on as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden interacts with children as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden interacts with children as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden interacts with children as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden talks as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden takes a picture with a child as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden pose for a picture with children as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden laughs as he interacts with people while attending a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. President Joe Biden pose for a picture with children as he attends a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

U.S. Vice President Kamala Harris addresses the United Steelworkers union convention in Las Vegas, U.S. August 10, 2022. REUTERS/Erwin Seba 

Thomas Conway, United Steelworkers International president, gears up to organize workers in new industries, including electric cars, offshore wind power construction and lithium mining, in Las Vegas, Nevada, U.S., August 8, 2022. REUTERS/Erwin Seba 

A worker looks on at the ArcelorMittal Kryvyi Rihl steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker walks at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker is pictured at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker is pictured at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker looks on at the ArcelorMittal Kryvyi Rihl steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker walks at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

Smoke rises from chimneys at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

Smoke rises from chimneys at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

Workers walk at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker processes liquid iron in a steel foundry at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A general view of converters is seen at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker processes liquid iron in a steel foundry at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A worker processes liquid iron in a steel foundry at the ArcelorMittal Kryvyi Rih steelworks, amid Russia's invasion of Ukraine, in the town of Kryvyi Rih, Dnipropetrovsk region, Ukraine April 27, 2022. REUTERS/Ueslei Marcelino 

A view shows the monument to Soviet steelworker Makar Mazay near the Illich Steel and Iron Works damaged during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 15, 2022. REUTERS/Alexander Ermochenko 

Teacher Alla Bubela, 46, and steelworker at Azovstal plant Andriy Bubela, 46, along with their neighbour take shelter from shelling in the entryway of an apartment building during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 12, 2022. REUTERS/Alexander Ermochenko 

Teacher Alla Bubela, 46, and steelworker at Azovstal plant Andriy Bubela, 46, take shelter from shelling in the entryway of an apartment building during Ukraine-Russia conflict in the southern port city of Mariupol, Ukraine April 12, 2022. REUTERS/Alexander Ermochenko 

United Steelworkers union (USW) union members from California, Texas and Utah protest in support of workers on strike at Chevron Corp's Richmond, California, refinery, outside of a hotel in San Antonio, U.S., March 29, 2022. REUTERS/Erwin Seba