A view of the Polish self-propelled howitzer KRAB as Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 30, 2023. REUTERS/Fabian Bimmer REFILE- CORRECTING INFORMATION 

A view of the M142 High Mobility Artillery Rocket System (HIMARS) as Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 30, 2023. REUTERS/Fabian Bimmer 

A view of the Polish self-propelled howitzer KRAB as Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 30, 2023. REUTERS/Fabian Bimmer REFILE- CORRECTING INFORMATION 

A view of the M142 HIMARS rocket (high mobility artillery rocket system) as Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 30, 2023. REUTERS/Fabian Bimmer 

New Zealand's Defence Minister Andrew Little poses for a picture in Wellington, New Zealand, March 30, 2023. REUTERS/Lucy Craymer 

New Zealand's Defence Minister Andrew Little poses for a picture in Wellington, New Zealand, March 30, 2023. REUTERS/Lucy Craymer 

New Zealand's Defence Minister Andrew Little poses for a picture in Wellington, New Zealand, March 30, 2023. REUTERS/Lucy Craymer 

M777 Howitzers are pictured during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers stand beside a vehicle during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers stand beside a vehicle during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers stand beside a vehicle during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers clean a weapon during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers talk during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers take part in a manoeuvre during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers clean a weapon during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers take part in a manoeuvre during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

U.S. soldiers take part in a manoeuvre during the Dynamic Front military exercise led by the United States in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Canadian servicemen of NATO enhanced Forward Presence battle group attend Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Canadian servicemen of NATO enhanced Forward Presence battle group attend Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Italian Ariete tank of NATO enhanced Forward Presence battle group attends Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Polish PT-91 tank of NATO enhanced Forward Presence battle group attends Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish Leopard 2 tank of NATO enhanced Forward Presence battle group attends Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish Leopard 2 tank of NATO enhanced Forward Presence battle group attends Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish Leopard 2 tank of NATO enhanced Forward Presence battle group attends Crystal Arrow 2023 military exercise in Adazi, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Polish soldier with a mask looks on during Dynamic Front military exercise led by the United States, in a training area in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish soldier sits in Polish self-propelled howitzer KRAB during Dynamic Front military exercise led by the United States, in a training area in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Polish self-propelled howitzer KRAB is pictured while Dynamic Front military exercise led by the United States takes place in a training area, in Oksbol, Denmark March 29, 2023. REUTERS/Fabian Bimmer 

Spanish army servicemen prepare NASAMS medium range ground-based air defence rocket launcher, in Lielvarde air base, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish army servicemen prepare NASAMS medium range ground-based air defence rocket launcher, in Lielvarde air base, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish army servicemen prepare NASAMS medium range ground-based air defence rocket launcher, in Lielvarde air base, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish army servicemen prepare NASAMS medium range ground-based air defence rocket launcher, in Lielvarde air base, Latvia March 29, 2023. REUTERS/Ints Kalnins 

Spanish army servicemen prepare NASAMS medium range ground-based air defence rocket launcher, in Lielvarde air base, Latvia March 29, 2023. REUTERS/Ints Kalnins 

South Korean Marines' Assault Amphibious Vehicles (KAAV) take part in U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. marines film during U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. marines film their Landing Craft Air Cushion (LCAC) approaching to seashore during U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

An anti-war activist holds up a sign "Stop war exercise, Go home" in front of a South Korean marine taking a position during a U.S and South Korea marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY 

South Korean Marines' Assault Amphibious Vehicles (KAAV) fire smoke shells during U.S and South Korea’s marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. marines arrive at a seashore for U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. marines arrive at a seashore for U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. and South Korea's marines take part in an amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

South Korea's marines take part in U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

South Korea's marines take part in U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

South Korea's marines take part in U.S and South Korea's marine corps combined amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. and South Korea's marines take part in an amphibious landing drill called the 'Ssangyong' exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

A South Korea's marine takes position during U.S and South Korea's marine corps combined amphibious landing drill called the ‘Ssangyong’ exercise, in Pohang, South Korea, March 29, 2023. REUTERS/Kim Hong-Ji 

U.S. Border Patrol agents patrol near the wall on the United States and Mexico border, seen from Ciudad Juarez, Mexico March 27, 2023. REUTERS/Jose Luis Gonzalez 

U.S. Border Patrol agents patrol near the wall on the United States and Mexico border, as seen from Ciudad Juarez, Mexico, March 27, 2023. REUTERS/Jose Luis Gonzalez 

Former German Defence Minister Christine Lambrecht waves as she attends the send-off Grand Tattoo of the German armed forces Bundeswehr in honour of Lambrecht, at the Federal Ministry of Defence in Berlin, Germany, March 28, 2023. REUTERS/Annegret Hilse 

German Defence Minister Boris Pistorius, his predecessor Christine Lambrecht and Major General Carsten Breuer attend the send-off Grand Tattoo of the German armed forces Bundeswehr in honour of Lambrecht, at the Federal Ministry of Defence in Berlin, Germany, March 28, 2023. REUTERS/Annegret Hilse 

German Defence Minister Boris Pistorius and his predecessor Christine Lambrecht attend the send-off Grand Tattoo of the German armed forces Bundeswehr in honour of Lambrecht, at the Federal Ministry of Defence in Berlin, Germany, March 28, 2023. REUTERS/Annegret Hilse 

German Defence Minister Boris Pistorius, his predecessor Christine Lambrecht and Major General Carsten Breuer attend the send-off Grand Tattoo of the German armed forces Bundeswehr in honour of Lambrecht, at the Federal Ministry of Defence in Berlin, Germany, March 28, 2023. REUTERS/Annegret Hilse 

Soldiers line up with torches for the send-off Grand Tattoo of the German armed forces Bundeswehr in honour of former Defence Minister Christine Lambrecht, at the Federal Ministry of Defence in Berlin, Germany, March 28, 2023. REUTERS/Annegret Hilse 

Soldiers line up with torches for the send-off Grand Tattoo of the German armed forces Bundeswehr in honour of former Defence Minister Christine Lambrecht, at the Federal Ministry of Defence in Berlin, Germany, March 28, 2023. REUTERS/Annegret Hilse