A Ukrainian marine sets up a FPV-drone during a flight training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine May 15, 2023. REUTERS/Sofiia Gatilova 

A Ukrainian marine sets up a FPV-drone during a flight training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine May 15, 2023. REUTERS/Sofiia Gatilova 

A Ukrainian marine attends a FPV-drone flight training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine May 15, 2023. REUTERS/Sofiia Gatilova TPX IMAGES OF THE DAY 

A Ukrainian serviceman of the 128th Mountain assault Brigade rests during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade rest during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

A Ukrainian serviceman of the 128th Mountain assault Brigade puts a dog in a helmet after a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade set up an 120mm mortar during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

A Ukrainian serviceman of the 128th Mountain assault Brigade pets a dog after a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade set up an 120mm mortar during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade attend a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade set up an 120mm mortar during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade set up an 120mm mortar during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

A Ukrainian serviceman of the 128th Mountain assault Brigade rests during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

A Ukrainian serviceman of the 128th Mountain assault Brigade jumps off a track during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade set up an 120mm mortar during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade rest during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Ukrainian servicemen of the 128th Mountain assault Brigade set up an 120mm mortar during a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

A Ukrainian serviceman of the 128th Mountain assault Brigade pets a dog after a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

A Ukrainian serviceman of the 128th Mountain assault Brigade smokes a cigarette after a military training, amid Russia's attack on Ukraine, in Dnipropetrovsk region, Ukraine, May 15, 2023. REUTERS/Bernadett Szabo 

Taiwan President Tsai Ing-wen inspects a military training at a reservist base in Taoyuan, Taiwan May 11, 2023. REUTERS/Fabian Hamacher 

Taiwan President Tsai Ing-wen inspects a military training at a reservist base in Taoyuan, Taiwan May 11, 2023. REUTERS/Fabian Hamacher 

Taiwan President Tsai Ing-wen inspects a military training at a reservist base in Taoyuan, Taiwan May 11, 2023. REUTERS/Fabian Hamacher 

Members of Taiwan's reserve forces take part in a military training at a reservist base in Taoyuan, Taiwan May 11, 2023. REUTERS/Fabian Hamacher 

Volunteers help an elderly woman to board a train to Dnipro during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine May 10, 2023. REUTERS/Sofiia Gatilova 

Volunteers and a Ukrainian Emergency Service member help an elderly man to board a train to Dnipro during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine May 10, 2023. REUTERS/Sofiia Gatilova 

A volunteer helps an elderly woman to board a train to Dnipro during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine May 10, 2023. REUTERS/Sofiia Gatilova TPX IMAGES OF THE DAY 

A volunteer helps an elderly woman to board a train to Dnipro during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine May 10, 2023. REUTERS/Sofiia Gatilova 

Volunteers help an elderly woman to board a train to Dnipro during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine May 10, 2023. REUTERS/Sofiia Gatilova 

Volunteers and a Ukrainian Emergency Service member help an elderly man to board a train to Dnipro during an evacuation effort from war-affected areas of eastern Ukraine, amid Russia's invasion of the country, in Pokrovsk, Donetsk region, Ukraine May 10, 2023. REUTERS/Sofiia Gatilova 

Ukrainian servicemen are seen crossing the border into Ukraine after training, near Lviv, Ukraine May 8, 2023. REUTERS/Carlos Barria 

Ukrainian servicemen are seen crossing the border into Ukraine after training, near Lviv, Ukraine May 8, 2023. REUTERS/Carlos Barria 

Troops in full military uniform are seen at Waterloo train station from various military barracks, as part of Britain's King Charles' coronation in London, Britain May 6, 2023. REUTERS/May James 

Troops in full military uniform arrive at Waterloo train station from various military barracks and march across Westminster Bridge, as part of Britain's King Charles' coronation in London, Britain May 6, 2023. REUTERS/May James 

Troops in full military uniform arrive at Waterloo train station from various military barracks and march across Westminster Bridge, as part of Britain's King Charles' coronation in London, Britain May 6, 2023. REUTERS/May James 

Troops in full military uniform arrive at Waterloo train station from various military barracks and march across Westminster Bridge, as part of Britain's King Charles' coronation in London, Britain May 6, 2023. REUTERS/May James 

Troops in full military uniform arrive at Waterloo train station from various military barracks and march across Westminster Bridge, as part of Britain's King Charles' coronation in London, Britain May 6, 2023. REUTERS/May James 

Troops in full military uniform arrive at Waterloo train station from various military barracks and march across Westminster Bridge, as part of Britain's King Charles' coronation in London, Britain May 6, 2023. REUTERS/May James REFILE - CORRECTING YEAR TPX IMAGES OF THE DAY 

Soldiers stand on a tank at a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

A Ukrainian soldier looks on at a training site, where fellow Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Soldiers stand next to a tank at a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

A close view of a tank is seen at a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

German Defence Minister Boris Pistorius speaks next to Danish acting Defence Minister Troels Lund Poulsen as they visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Ukrainian soldiers maintain a tank at a training site, where fellow Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Soldiers maintain a tank at a training site, where fellow Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen stand as Ukrainian soldiers clean the cannon of a Leopard tank at a training site, where fellow Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Ukrainian soldiers maintain a Leopard tank at a training site, where fellow Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Ukrainian soldiers look at a cannon at a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Ukrainian soldiers adjust the cannon on the tank next to a Danish instructor at a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Nadja Wohlleben 

Details of a patch are seen on a German soldier's uniform at a training site where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine), on the day of German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen's visit, in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

Ukrainians soldiers look on as German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

German Defence Minister Boris Pistorius speaks to the media next to Danish acting Defence Minister Troels Lund Poulsen as they visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

A Ukrainian soldier looks on as German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

A Ukrainian soldier looks on as German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

Soldiers sit on a tank at a training site where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine), on the day of German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen's visit, in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

Soldiers sit on a tank at a training site where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine), on the day of German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen's visit, in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

German Defence Minister Boris Pistorius speaks next to Danish acting Defence Minister Troels Lund Poulsen as they visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

Soldiers stand at a training site where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine), on the day of German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen's visit, in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen visit a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch 

German Defence Minister Boris Pistorius and Danish acting Defence Minister Troels Lund Poulsen stand as a cannon is being cleaned at a training site, where Ukrainian soldiers undergo maintenance training on Leopard 1A5 tanks, at the German army Bundeswehr base, part of the EU Military Assistance Mission in support of Ukraine (EUMAM Ukraine) in Klietz, Germany, May 5, 2023. REUTERS/Fabrizio Bensch